Always consult the official Owners Manuals first

Difference between revisions of "Amplifier models list"

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This page lists all amp models in Fractal Audio’s Axe-Fx III and FM processors, with brief additional information. Depending on the firmware, some models may not yet be available on every device. The information also partly applies to the previous generation of modelers (Axe-Fx II series and AX8). Many of the amp models are featured in [[Factory presets]].
+
This page lists all amp models in Fractal Audio’s Axe-Fx III and FM processors, with brief additional information (based on "Cygnus" amp modeling). Depending on the firmware, some models may not yet be available on every device. The information also partly applies to the previous generation of modelers (Axe-Fx II series and AX8). Many of the amp models are featured in [[Factory presets]].
  
[http://wiki.fractalaudio.com/axefx2/index.php?title=Yeks_Guide_to_the_Fractal_Audio_Amp_Models Yek's Guide to the Fractal Audio Amplifier Models] provides in-depth information about each amp model. [https://forum.fractalaudio.com/threads/new-fas-amp-models-gallery-axe-fx-iii-ares-12-05.150553/ MDProd's Gallery] provides additional visuals and info. [https://forum.fractalaudio.com/threads/is-the-axefx-worth-450-000.168535 Estimated total price of all modeled amps]
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[http://wiki.fractalaudio.com/axefx2/index.php?title=Yeks_Guide_to_the_Fractal_Audio_Amp_Models Yek's Guide to the Fractal Audio Amplifier Models] provides in-depth information about most amp models.
  
 
__TOC__
 
__TOC__
==1959SLP JUMP (based on 100W Marshall Super Lead Plexi 1959 reissue)==
+
==1959SLP JUMPED (based on 100W Marshall Super Lead Plexi 1959 reissue)==
  
 
[[file:SLP.png|300px]]
 
[[file:SLP.png|300px]]
  
 
Models:
 
Models:
# jumpered channels
+
* Normal and Treble channels jumpered
# Normal channel
+
* Normal channel
# Treble (High) channel
+
* Treble (High) channel
  
 
[[Cabinet models list| Cab:]] Marshall 4x12 (G12M, G12H)
 
[[Cabinet models list| Cab:]] Marshall 4x12 (G12M, G12H)
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Volume Normal, Volume Treble, Bass, Middle, Treble, Presence
 
Volume Normal, Volume Treble, Bass, Middle, Treble, Presence
  
Fractal Audio:
 
 
# (about the Plexi model in the Standard/Ultra): "One of the first mods people make to real 'Plexi' Marshalls is to "clip the bright cap". The bright cap varied over the years, supposedly depending on what was lying around in the shop. The model defaults to the bright cap in the circuit. If you turn off Bright you're effectively clipping the bright cap. The bright cap in Marshalls can be very bright and harsh. However, if you crank the Master you might find the extra brightness helps compensate for the power amp getting darker."
 
# (about the Plexi model in the Standard/Ultra): "One of the first mods people make to real 'Plexi' Marshalls is to "clip the bright cap". The bright cap varied over the years, supposedly depending on what was lying around in the shop. The model defaults to the bright cap in the circuit. If you turn off Bright you're effectively clipping the bright cap. The bright cap in Marshalls can be very bright and harsh. However, if you crank the Master you might find the extra brightness helps compensate for the power amp getting darker."
 
# (about fizz) "It's the way a Plexi is supposed to sound. That's due to the cathode follower. That raspiness helps it cut through in a mix. I own three of them and they are that fizzy." [https://forum.fractalaudio.com/threads/high-end-fizz-is-this-normal.43598/#post-576475 source]
 
# (about fizz) "It's the way a Plexi is supposed to sound. That's due to the cathode follower. That raspiness helps it cut through in a mix. I own three of them and they are that fizzy." [https://forum.fractalaudio.com/threads/high-end-fizz-is-this-normal.43598/#post-576475 source]
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==1959SLP TREBLE==
 
==1959SLP TREBLE==
  
==1987X JUMP (based on 50W Marshall 1987X reissue)==
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==1987X JUMPED (based on 50W Marshall 1987X reissue)==
  
 
[[file:1987X.png|300px]]
 
[[file:1987X.png|300px]]
  
 
Models:
 
Models:
# jumpered channels
+
* Normal and Treble channels jumpered
# Normal channel
+
* Normal channel
# Treble channel
+
* Treble channel
  
 
[[Cabinet models list | Cab:]] Marshall 4x12 (G12M, G12H)
 
[[Cabinet models list | Cab:]] Marshall 4x12 (G12M, G12H)
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Notes: see 1959SLP
 
Notes: see 1959SLP
  
Fractal Audio:
 
 
# "The 1987x doesn't have the 0.68uF cap on the last triode. Gives it a smoother distortion." [https://forum.fractalaudio.com/posts/1000388/ source]
 
# "The 1987x doesn't have the 0.68uF cap on the last triode. Gives it a smoother distortion." [https://forum.fractalaudio.com/posts/1000388/ source]
 
# "Our reference amp has no bright cap. Looks like it was that way from the factory. There are no signs it was removed. The location in the circuit board is empty and the solder joints do not appear to have been disturbed." [https://forum.fractalaudio.com/threads/1987x-bright-switch-off-by-default.145332/post-1718899 source]
 
# "Our reference amp has no bright cap. Looks like it was that way from the factory. There are no signs it was removed. The location in the circuit board is empty and the solder joints do not appear to have been disturbed." [https://forum.fractalaudio.com/threads/1987x-bright-switch-off-by-default.145332/post-1718899 source]
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Models:
 
Models:
# Blue channel of 100w amp
+
* 100W amp, Blue channel
# Green channel of 100w amp
+
* 100W amp, Green channel
# Red channel of 100w amp
+
* 100W amp, Red channel
# Blue channel of 50w amp
+
* 50W amp, Blue channel
  
 
[[Cabinet models list| Cab:]] 5150 4x12 or 2x12 (G12H, G12EVH)
 
[[Cabinet models list| Cab:]] 5150 4x12 or 2x12 (G12H, G12EVH)
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Gain, Low, Mid, High, Volume, Presence, Resonance (only on 50w model)
 
Gain, Low, Mid, High, Volume, Presence, Resonance (only on 50w model)
  
Fractal Audio:
 
 
# "IMO, it's a very good amp. The build-quality is great and the design is very good. It is similar to the previous versions but voiced a bit different. Personally, I think all of the 5150's have more gain stages than necessary which just makes for unnecessary failure points but the "OMG, this amp has sooo many toobz it must sound awesome" marketing makes it understandable. It's incredibly heavy though." [https://forum.fractalaudio.com/posts/679483/ source]
 
# "IMO, it's a very good amp. The build-quality is great and the design is very good. It is similar to the previous versions but voiced a bit different. Personally, I think all of the 5150's have more gain stages than necessary which just makes for unnecessary failure points but the "OMG, this amp has sooo many toobz it must sound awesome" marketing makes it understandable. It's incredibly heavy though." [https://forum.fractalaudio.com/posts/679483/ source]
 
# "A 5150 uses a fixed bias with no adjustment. Depending on the tubes used the bias can run from average to cold. The model uses average. Some people like a colder sound. If you prefer your amps biased cold, then reduce the bias parameter to taste." [https://forum.fractalaudio.com/posts/742231/ source]
 
# "A 5150 uses a fixed bias with no adjustment. Depending on the tubes used the bias can run from average to cold. The model uses average. Some people like a colder sound. If you prefer your amps biased cold, then reduce the bias parameter to taste." [https://forum.fractalaudio.com/posts/742231/ source]
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==5153 50W BLUE==
 
==5153 50W BLUE==
  
==59 BASSGUY (based on '59 Fender Tweed Bassman, 5F6-A)==
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==59 BASSGUY (based on 1959 Fender Tweed Bassman, 5F6-A)==
  
 
[[file:bassman.jpg|300px]]
 
[[file:bassman.jpg|300px]]
  
Model:
+
Models:
# Normal channel (engage Bright switch for Bright channel)
+
* Bright channel (for the Normal channel: disengage Bright switch)
 +
* Normal and Bright channels jumpered
  
 
[[Cabinet models list | Cab:]] Fender 4x10 (P10R, P10Q)
 
[[Cabinet models list | Cab:]] Fender 4x10 (P10R, P10Q)
  
Bass, Middle, Treble, Presence, Volume Normal, Volume Bright
+
Volume Normal, Volume Bright, Bass, Middle, Treble, Presence
  
Fractal Audio:
 
 
# "There is no "High" channel on a 59 Bassman. There is a Normal and Bright channel. The Bright channel model is selected by turning on the Bright switch. The models are based on the higher gain input (the "1" input). To simulate the lower gain input simply set Input Trim to 0.5." [https://forum.fractalaudio.com/posts/1109139/ source]
 
# "There is no "High" channel on a 59 Bassman. There is a Normal and Bright channel. The Bright channel model is selected by turning on the Bright switch. The models are based on the higher gain input (the "1" input). To simulate the lower gain input simply set Input Trim to 0.5." [https://forum.fractalaudio.com/posts/1109139/ source]
 
# "All the Fender models except the 59 Bassman and 5F8 Tweed don't have cathode followers." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-00-beta-3.148907/page-3#post-1764588 source]
 
# "All the Fender models except the 59 Bassman and 5F8 Tweed don't have cathode followers." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-00-beta-3.148907/page-3#post-1764588 source]
# (Cygnus) "The Bassman was reworked using an original 59 Bassman 5F6-A as a reference. This has a 12AY7 input buffer which has less gain than the reissue which uses a 12AX7A (7025 actually, same thing)."
+
# ("Cygnus" amp modeling) "The Bassman was reworked using an original 59 Bassman 5F6-A as a reference. This has a 12AY7 input buffer which has less gain than the reissue which uses a 12AX7A (7025 actually, same thing)."
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-59-bassguy-59-fender-tweed-bassman-5f6-a.111275/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-59-bassguy-59-fender-tweed-bassman-5f6-a.111275/ Yek's write-up]
  
==59 BASSGUY JUMP==
+
==59 BASSGUY JUMPED==
  
 
==5F1 TWEED (based on Fender Tweed Champ, 5F1)==
 
==5F1 TWEED (based on Fender Tweed Champ, 5F1)==
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Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list| Cab:]] Fender 1x8
 
[[Cabinet models list| Cab:]] Fender 1x8
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Volume
 
Volume
  
Fractal Audio:
 
 
# "This particular amp exhibits a unique breakup characteristic due to its single-ended design and simple circuit."
 
# "This particular amp exhibits a unique breakup characteristic due to its single-ended design and simple circuit."
  
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Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list| Cab:]] Fender 1x8
 
[[Cabinet models list| Cab:]] Fender 1x8
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Volume, Tremolo
 
Volume, Tremolo
  
Fractal Audio:
 
 
# "The circuit is slightly different than the original 5F1. It has cathode bypass caps giving it more gain." [http://forum.fractalaudio.com/threads/fractal-audio-amp-models-5f1-tweed-fender-champ-5f1.111067/page-2#post-1508977 source]
 
# "The circuit is slightly different than the original 5F1. It has cathode bypass caps giving it more gain." [http://forum.fractalaudio.com/threads/fractal-audio-amp-models-5f1-tweed-fender-champ-5f1.111067/page-2#post-1508977 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-5f1-tweed-fender-champ.111067 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-5f1-tweed-fender-champ.111067 Yek's write-up]
  
==5F8 TWEED (based on Keith Urban's '59 high-powered Fender Tweed Twin, 5F8)==
+
==5F8 TWEED (based on Keith Urban's 1959 high-powered Fender Tweed Twin, 5F8-A)==
  
 
[[file:5f8-2.jpg|300px]]
 
[[file:5f8-2.jpg|300px]]
  
 
Model:
 
Model:
# Normal channel (engage Bright switch for Bright channel)
+
* Normal channel (Bright channel: engage Bright switch)
  
[[Cabinet models list| Cab:]] Fender 2x12 (P12N, but Keith Urban's cab contains Two-Rock speakers)
+
[[Cabinet models list| Cab:]] Fender 2x12 (P12N, but Keith Urban's cab has Two-Rock speakers)
  
Presence, Middle, Bass, Treble, Volume Bright, Volume Normal
+
Volume Bright, Volume Normal, Presence, Middle, Bass, Treble
  
Fractal Audio:
 
 
# "Based on a 1959 Fender Twin Amp. This particular model is based on Keith Urban’s “#1”. Thank you Keith for allowing us the use of your prized amplifier."
 
# "Based on a 1959 Fender Twin Amp. This particular model is based on Keith Urban’s “#1”. Thank you Keith for allowing us the use of your prized amplifier."
 
# "All the Fender models except the 59 Bassman and 5F8 Tweed don't have cathode followers." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-00-beta-3.148907/page-3#post-1764588 source]
 
# "All the Fender models except the 59 Bassman and 5F8 Tweed don't have cathode followers." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-00-beta-3.148907/page-3#post-1764588 source]
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[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-5f8-tweed-keith-urbans-high-power-fender-twin-amp.111123 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-5f8-tweed-keith-urbans-high-power-fender-twin-amp.111123 Yek's write-up]
  
==65 BASSGUY BASS (based on Dweezil Zappa's '65 blackface Fender Bassman, AB165)==
+
==65 BASSGUY BASS (based on Dweezil Zappa's 1965 blackface Fender Bassman, AB165)==
  
 
[[file:ab165.png|300px]]
 
[[file:ab165.png|300px]]
  
 
Models:
 
Models:
# Bass channel
+
* Bass channel
# Normal channel
+
* Normal channel
  
 
[[Cabinet models list | Cab:]] Fender 2x12 (Oxford)
 
[[Cabinet models list | Cab:]] Fender 2x12 (Oxford)
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Volume, Bass, Treble, fixed Presence circuit (Presence should be at 10), Bright switch (Normal channel only)
 
Volume, Bass, Treble, fixed Presence circuit (Presence should be at 10), Bright switch (Normal channel only)
  
Fractal Audio:
 
 
# "Has a pissed-off Marshall vibe to it." [http://forum.fractalaudio.com/posts/490912/ source]
 
# "Has a pissed-off Marshall vibe to it." [http://forum.fractalaudio.com/posts/490912/ source]
 
# "The 65 Bassguy was matched to a 65 Bassman that Dweezil sent me. It's a vicious amp that sounds more like a Plexi than a Fender. It's the infamous AB165 circuit which is very crunchy and bright and does not sound like your typical Fender." [https://forum.fractalaudio.com/threads/am-i-the-only-one-who-noticed-that-some-amps-have-alot-more-gain.51123/page-2#post-658833 source]
 
# "The 65 Bassguy was matched to a 65 Bassman that Dweezil sent me. It's a vicious amp that sounds more like a Plexi than a Fender. It's the infamous AB165 circuit which is very crunchy and bright and does not sound like your typical Fender." [https://forum.fractalaudio.com/threads/am-i-the-only-one-who-noticed-that-some-amps-have-alot-more-gain.51123/page-2#post-658833 source]
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==65 BASSGUY NORMAL==
 
==65 BASSGUY NORMAL==
  
==6G12 CONCERT (based on '60 brownface Fender Concert, 6G12)==
+
==6G12 CONCERT (based on 1960 brownface Fender Concert, 6G12)==
  
 
[[file:6G12.jpg|300px]]
 
[[file:6G12.jpg|300px]]
  
 
Model:
 
Model:
# Vibrato channel
+
* Vibrato channel
  
 
[[Cabinet models list | Cab:]] Fender 4x10 (P10R, P10Q, C10R, Oxford)  
 
[[Cabinet models list | Cab:]] Fender 4x10 (P10R, P10Q, C10R, Oxford)  
  
Volume, Bass, Treble, Presence, Vibrato
+
Volume, Bass, Treble, Presence, Vibrato (not modeled)
  
Fractal Audio:
 
 
# "Super 6G4 is a Brownface Fender Super. Concert 6G12 is a Brownface Fender Concert. They are very similar amps and both sound "old". They definitely have that early 60's vibe to them." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-17-02-released.93734/#post-1124507 source]
 
# "Super 6G4 is a Brownface Fender Super. Concert 6G12 is a Brownface Fender Concert. They are very similar amps and both sound "old". They definitely have that early 60's vibe to them." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-17-02-released.93734/#post-1124507 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-6g12-concert-60-fender-brownface-concert.111224/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-6g12-concert-60-fender-brownface-concert.111224/ Yek's write-up]
  
==6G4 SUPER (based on '60 brownface Fender Super, 6G4)==
+
==6G4 SUPER (based on 1960 brownface Fender Super, 6G4)==
  
 
[[file:6G4.jpg|300px]]
 
[[file:6G4.jpg|300px]]
  
 
Model:
 
Model:
# Vibrato channel
+
* Vibrato channel
  
 
[[Cabinet models list | Cab:]] Fender 2x10 (Jensen P10R, P10Q, Oxford 10K5), Fender 2x12
 
[[Cabinet models list | Cab:]] Fender 2x10 (Jensen P10R, P10Q, Oxford 10K5), Fender 2x12
  
Volume, Bass, Treble, Presence, Vibrato
+
Volume, Bass, Treble, Presence, Vibrato (not modeled)
  
Fractal Audio:
 
 
# "Super 6G4 is a Brownface Fender Super. Concert 6G12 is a Brownface Fender Concert. They are very similar amps and both sound "old". They definitely have that early 60's vibe to them." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-17-02-released.93734/#post-1124507 source]
 
# "Super 6G4 is a Brownface Fender Super. Concert 6G12 is a Brownface Fender Concert. They are very similar amps and both sound "old". They definitely have that early 60's vibe to them." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-17-02-released.93734/#post-1124507 source]
  
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Models:
 
Models:
# EF86 Bass
+
* 12AX7 Bass
# EF86 Treble
+
* 12AX7 Treble
# 12AX7 Bass
+
* EF86 Bass
# 12AX7 Treble
+
* EF86 Treble
  
 
[[Cabinet models list | Cab:]] Morgan 1x12 (Alnico Gold, G12H)
 
[[Cabinet models list | Cab:]] Morgan 1x12 (Alnico Gold, G12H)
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Volume, Cut, Sun/Moon switch (= Bright switch), Brilliance switch (= Bass Cut), power scaling (not modeled), EF86/12AX7 switch
 
Volume, Cut, Sun/Moon switch (= Bright switch), Brilliance switch (= Bass Cut), power scaling (not modeled), EF86/12AX7 switch
  
Fractal Audio:
 
 
# "The AC-20 model is based on the amp with the power scaling at maximum power which effectively disables it (and sounds best IMO)." [https://forum.fractalaudio.com/posts/1079502/ source]
 
# "The AC-20 model is based on the amp with the power scaling at maximum power which effectively disables it (and sounds best IMO)." [https://forum.fractalaudio.com/posts/1079502/ source]
 
# "The AC-20 has power scaling. The Axe-Fx II does not model the power scaling circuit as there is no point in that." [https://forum.fractalaudio.com/threads/power-level-ac-20.89488/#post-1079494 source]
 
# "The AC-20 has power scaling. The Axe-Fx II does not model the power scaling circuit as there is no point in that." [https://forum.fractalaudio.com/threads/power-level-ac-20.89488/#post-1079494 source]
 
# "As with the real amp I dial in quite a bit of Hi-Cut." [http://forum.fractalaudio.com/threads/recommend-an-amp-for-p-w.106093/#post-1268874 source]
 
# "As with the real amp I dial in quite a bit of Hi-Cut." [http://forum.fractalaudio.com/threads/recommend-an-amp-for-p-w.106093/#post-1268874 source]
# "My favorite is the AC-20 Deluxe." [https://forum.fractalaudio.com/threads/axe-fx-iii-fw-3-0-reverb-samples-these-verbs-sound-killer.147176/page-2#post-1740296 source]
 
 
# "I think an AC-20 does the Vox thing better than Vox." [https://forum.fractalaudio.com/threads/recognition-and-respect-to-cliff-and-his-morgan-ac20.155040/post-1844685 source]
 
# "I think an AC-20 does the Vox thing better than Vox." [https://forum.fractalaudio.com/threads/recognition-and-respect-to-cliff-and-his-morgan-ac20.155040/post-1844685 source]
 
# "AC-30's have a poorly designed cathode follower. The bias point is totally wrong and crushes one side of the signal considerably. IMO either the cathode resistor should be 100K or the plate resistor of the preceding stage should be higher, 200K. The clipping is extremely asymmetric. Too much IMO. A little asymmetry is good because it warms things up. Too much causes excessive even-order harmonics which makes things fuzzy and indistinct. The clipping is so asymmetric on an AC-30 that it's almost a half-wave rectifier. You can tweak this by adjusting the Preamp Bias point and/or lowering the Cathode Follower Compression. Or you can lower the Harmonics value which reduces the asymmetric distortion. The downside of that is that it then overdrives the phase inverter causing blocking distortion from excessive bias excursion. Another thing to try is to increase the Grid Clipping value which will add a little headroom. Start with the Bias point. AC-30's are very sensitive to the tube type and part tolerances. A tiny change in the bias point can make a big difference. The default bias point is based on Mullard ECC83 tubes. I prefer the AC-20 because it doesn't have a cathode follower so doesn't suffer from these problems. The cathode follower in an AC-30 doesn't even do all that much. Normally you use a cathode follower to preset a low-impedance source to the tone stack but the tone stack in an AC-30 doesn't present that great of a load anyways." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-02.148983/page-11#post-1767187 source]
 
# "AC-30's have a poorly designed cathode follower. The bias point is totally wrong and crushes one side of the signal considerably. IMO either the cathode resistor should be 100K or the plate resistor of the preceding stage should be higher, 200K. The clipping is extremely asymmetric. Too much IMO. A little asymmetry is good because it warms things up. Too much causes excessive even-order harmonics which makes things fuzzy and indistinct. The clipping is so asymmetric on an AC-30 that it's almost a half-wave rectifier. You can tweak this by adjusting the Preamp Bias point and/or lowering the Cathode Follower Compression. Or you can lower the Harmonics value which reduces the asymmetric distortion. The downside of that is that it then overdrives the phase inverter causing blocking distortion from excessive bias excursion. Another thing to try is to increase the Grid Clipping value which will add a little headroom. Start with the Bias point. AC-30's are very sensitive to the tube type and part tolerances. A tiny change in the bias point can make a big difference. The default bias point is based on Mullard ECC83 tubes. I prefer the AC-20 because it doesn't have a cathode follower so doesn't suffer from these problems. The cathode follower in an AC-30 doesn't even do all that much. Normally you use a cathode follower to preset a low-impedance source to the tone stack but the tone stack in an AC-30 doesn't present that great of a load anyways." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-02.148983/page-11#post-1767187 source]
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# "So I was testing the next beta and selected the AC-20. Was hearing a lot of ghost notes compared to the old algorithm (in the debug build I can select between algorithms with a hidden parameter) and figured that couldn't be right. Hooked up the real AC-20 and, sure enough, ghost notes galore at the same settings." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-0-public-beta.154714/post-1840850 source]
 
# "So I was testing the next beta and selected the AC-20. Was hearing a lot of ghost notes compared to the old algorithm (in the debug build I can select between algorithms with a hidden parameter) and figured that couldn't be right. Hooked up the real AC-20 and, sure enough, ghost notes galore at the same settings." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-0-public-beta.154714/post-1840850 source]
 
# "Our reference amp is a head with matching 1x12 cab." [https://forum.fractalaudio.com/threads/recognition-and-respect-to-cliff-and-his-morgan-ac20.155040/post-1844744 source]
 
# "Our reference amp is a head with matching 1x12 cab." [https://forum.fractalaudio.com/threads/recognition-and-respect-to-cliff-and-his-morgan-ac20.155040/post-1844744 source]
 +
# "The normal channel on a Vox would be closest to the Morgan. The Brilliant channel is a "Top Boost" which means it has a tone stack and a significant midrange cut. The normal channel has no tone stack. You can't compare a a Morgan AC20 to the Brilliant channel of an AC30 and declare that one sounds better than the other. Totally different preamps and, therefore, different sound. Personally I think the AC20 is a better amp. Better made, better quality components, much better transformers. If you want that chimey AC30 sound you put an EQ before it and suck out some mids." [https://forum.fractalaudio.com/threads/how-accurate-is-fractals-amp-modeling.168786/post-2064189 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-ac-20-morgan-ac20-deluxe.111453/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-ac-20-morgan-ac20-deluxe.111453/ Yek's write-up]
Line 253: Line 243:
  
 
Models:
 
Models:
# Lead channel, Contour Off (boosts lower midrange around 500 Hz)
+
* Lead channel, Contour switch OFF (boosts lower midrange around 500 Hz)
# Lead channel, Contour On (boosts from 1200 Hz and cuts lower midrange)
+
* Lead channel, Contour switch ON (boosts from 1200 Hz and cuts lower midrange)
  
 
[[Cabinet models list | Cab:]] Engl 4x12 (V30, V60)
 
[[Cabinet models list | Cab:]] Engl 4x12 (V30, V60)
  
Gain (input sensitivity), Lead (degree of distortion), Lead Boost switch, Contour switch, Bass, Middle, Treble, Rough/Smooth switch, Master, Presence, Depth Boost switch
+
Gain (input sensitivity), Lead (degree of distortion), Lead Boost switch, Contour switch, Bass, Middle, Treble, Rough/Smooth switch (not modeled), Master, Presence, Depth Boost switch
  
Fractal Audio:
 
 
# "From noon and up it's a presence boost, from noon down it's a presence cut." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-1-03-firmware-release.106931/page-12#post-1280997 source]
 
# "From noon and up it's a presence boost, from noon down it's a presence cut." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-1-03-firmware-release.106931/page-12#post-1280997 source]
 +
# "(...) Engl Savage presence network which reduces negative feedback as the control is turned down causing an increase in volume." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-5-cygnus-firmware-public-beta-2.170901/post-2059273 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-angel-severe-engl-savage-120.111501/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-angel-severe-engl-savage-120.111501/ Yek's write-up]
Line 268: Line 258:
  
 
==ARCHEAN (based on 100W PRS Archon)==
 
==ARCHEAN (based on 100W PRS Archon)==
 +
 +
[[File:Archon.jpg|300px]]
  
 
Models:
 
Models:
# Archean: based on lead channel with Bright switch off
+
* Archean: Lead channel with Bright switch OFF
# Archean Bright: based on lead channel with Bright switch on
+
* Archean Bright: Lead channel with Bright switch ON
# Archean Clean: based on clean channel
+
* Archean Clean: Clean channel
  
Master Volume, Bass, Middle, Treble, Bright switch, Volume, Depth, Presence, Output Power switch
+
Master, Bass, Middle, Treble, Bright switch, Volume, Depth, Presence, Output Power (not modeled)
  
Fractal Audio:
 
 
# "You have to crank the MV on the real amp. The preamp is very "dry" so to get the juices flowing the power amp needs to be working hard. This also smooths out that funky midrange." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/page-10#post-1990153 source]
 
# "You have to crank the MV on the real amp. The preamp is very "dry" so to get the juices flowing the power amp needs to be working hard. This also smooths out that funky midrange." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/page-10#post-1990153 source]
 
# "I think part of the reason the real Archon needs to be cranked is because the power supply is too stiff. It's got six (!!!) big caps filtering the B+. That's too much filtering IMO unless you're playing at arena volumes. If I were to make a modification to the amp it would be a switch to disconnect four of those caps so the supply is more bouncy at moderate volumes. Maybe also a tube rectifier to add some more sponge." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/page-10#post-1990169 source]
 
# "I think part of the reason the real Archon needs to be cranked is because the power supply is too stiff. It's got six (!!!) big caps filtering the B+. That's too much filtering IMO unless you're playing at arena volumes. If I were to make a modification to the amp it would be a switch to disconnect four of those caps so the supply is more bouncy at moderate volumes. Maybe also a tube rectifier to add some more sponge." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/page-10#post-1990169 source]
# (100W or 50W) "100" [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/post-1990412 source]
+
# Based on 100W amp [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/post-1990412 source]
  
 
[https://forum.fractalaudio.com/threads/fractal-audio-amp-models-archean-based-on-prs-archon.165751/ Yek's write-up]
 
[https://forum.fractalaudio.com/threads/fractal-audio-amp-models-archean-based-on-prs-archon.165751/ Yek's write-up]
Line 292: Line 283:
  
 
Models:
 
Models:
# Low gain input
+
* Low gain input
# High gain input
+
* High gain input
  
 
[[Cabinet models list | Cab:]] cabinet with G12H speakers
 
[[Cabinet models list | Cab:]] cabinet with G12H speakers
  
Thump, Presence, Bass, Middle, Treble, Master, Gain, Edge, 3-way Gain Voice switch
+
Thump, Presence, Bass, Middle, Treble, Master, Gain, Edge (not modeled), 3-way Gain Voice switch
  
Fractal Audio:
 
 
# "The Atomica can tolerate high MV because it is a "Jose-style MV". The Jose-style MV imparts a very high source resistance to the tone stack which causes much more insertion loss and therefore lower drive level into the power amp." [https://forum.fractalaudio.com/posts/748843/ source]
 
# "The Atomica can tolerate high MV because it is a "Jose-style MV". The Jose-style MV imparts a very high source resistance to the tone stack which causes much more insertion loss and therefore lower drive level into the power amp." [https://forum.fractalaudio.com/posts/748843/ source]
 
# "Cameron amps are basically modified Marshalls. The Atomica is essentially a slightly modified JCM800 with a Jose-style zener clipper." [https://forum.fractalaudio.com/threads/dialling-in-the-marshalls.143682/page-5#post-1706652 source]
 
# "Cameron amps are basically modified Marshalls. The Atomica is essentially a slightly modified JCM800 with a Jose-style zener clipper." [https://forum.fractalaudio.com/threads/dialling-in-the-marshalls.143682/page-5#post-1706652 source]
# (fuzzy tone with Bright on) "That's the way those amps sound with the bright switch on. It's due to the location of the drive control. Turn down the Preamp Bias Excursion to reduce it. The problem with those "Mid Stage Drive" designs using a Plexi drive network is that if you bypass the drive pot with a cap (bright cap) you also bypass any grid stoppage and the next stage goes into blocking distortion very easily. There's essentially a straight shot into the grid for all the high frequencies. Friedman probably realized this and that's why there's no bright cap on the BE as the BE is very similar to the Atomica.
+
# (fuzzy tone with Bright on) "That's the way those amps sound with the bright switch on. It's due to the location of the drive control. Turn down the Preamp Bias Excursion to reduce it. The problem with those "Mid Stage Drive" designs using a Plexi drive network is that if you bypass the drive pot with a cap (bright cap) you also bypass any grid stoppage and the next stage goes into blocking distortion very easily. There's essentially a straight shot into the grid for all the high frequencies. Friedman probably realized this and that's why there's no bright cap on the BE as the BE is very similar to the Atomica." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2052829 source]
[https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2052829 source]
 
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-atomica-cameron-atomica.111547 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-atomica-cameron-atomica.111547 Yek's write-up]
Line 309: Line 298:
 
==ATOMICA LOW==
 
==ATOMICA LOW==
  
==BAND-COMMANDER (based on '68 silverface/blackface Fender Bandmaster, AB763)==
+
==BAND-COMMANDER (based on 1968 silverface/blackface Fender Bandmaster, AB763)==
  
 
[[file:bandmaster.jpg|300px]]
 
[[file:bandmaster.jpg|300px]]
  
 
Model:
 
Model:
# Vibrato channel
+
* Vibrato channel
  
 
[[Cabinet models list| Cab:]] Fender 2x12
 
[[Cabinet models list| Cab:]] Fender 2x12
Line 320: Line 309:
 
Vibrato channel: Volume, Bright switch, Treble, Bass, Tremolo
 
Vibrato channel: Volume, Bright switch, Treble, Bass, Tremolo
  
Fractal Audio:
 
 
# "The vibrato channel is loaded down by the vibrato circuit. The normal channel isn't. You can probably get close using the vibrato channel model by increasing the MV trim." [http://forum.fractalaudio.com/threads/maroon-5-axe-fx-iii-awesomeness.146287/page-2#post-1730430 source]
 
# "The vibrato channel is loaded down by the vibrato circuit. The normal channel isn't. You can probably get close using the vibrato channel model by increasing the MV trim." [http://forum.fractalaudio.com/threads/maroon-5-axe-fx-iii-awesomeness.146287/page-2#post-1730430 source]
  
Line 329: Line 317:
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "It was a total guess. I just tuned it by ear. It's just my idea of what 80's hair metal might sound like." [http://forum.fractalaudio.com/posts/700269/ source]
 
# "It was a total guess. I just tuned it by ear. It's just my idea of what 80's hair metal might sound like." [http://forum.fractalaudio.com/posts/700269/ source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
Line 345: Line 331:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list|Cab:]] 2x10, 1x12, 2x12 (G12M)
 
[[Cabinet models list|Cab:]] 2x10, 1x12, 2x12 (G12M)
  
Volume, Tone (Axe-Fx II/AX8 model: Treble), Tremolo
+
Volume, Tone, Tremolo
  
Fractal Audio:
 
 
# "Based on a Blankenship Leeds which is a boutique version of an 18W Marshall. This particular amp is known for sounding “big” despite being relatively low power."
 
# "Based on a Blankenship Leeds which is a boutique version of an 18W Marshall. This particular amp is known for sounding “big” despite being relatively low power."
 
# "The model was matched to Dweezil's amp. He loaned it to me because it was one of his favorite amps and I can see why. It's a really cool amp."
 
# "The model was matched to Dweezil's amp. He loaned it to me because it was one of his favorite amps and I can see why. It's a really cool amp."
Line 364: Line 349:
  
 
Models:
 
Models:
# Clean channel with PAB (Pre-Amp Bypass) off
+
* Clean channel with PAB (Pre-Amp Bypass) OFF
# Overdrive channel with PAB off
+
* Overdrive channel with PAB OFF
# Overdrive channel with PAB on
+
* Overdrive channel with PAB ON
  
 
[[Cabinet models list|Cab:]] Bludotone 1x12, 2x12 (G12-65, EVM)
 
[[Cabinet models list|Cab:]] Bludotone 1x12, 2x12 (G12-65, EVM)
  
Volume, Overdrive Level, Treble, Middle, Bass, Master, Presence. Switches: Bright, Mid, Rock/Jazz. Footswitchable Pre-Amp Bypass (PAB) which bypasses the tonestack
+
Volume, Overdrive Level, Treble, Middle, Bass, Master, Presence. Switches: Bright, Mid, Rock/Jazz. Footswitchable Pre-Amp Bypass (PAB) which bypasses the tonestack (Bass / Middle / Treble)
  
 
Forum member AustinBuddy, owner of the original amp:
 
Forum member AustinBuddy, owner of the original amp:
 
# "The model is of a 100w 6L6 BludoDrive Ojai by Bludotone amps, using Fractal's MIMIC process. The Ojai has the same schematic as the famous "Tan" boutique amp played by Robben Ford. It pairs well with the factory Rumble 4X12 cabinet. On the Ojai there is a bright cap on the Master Volume. As you turn the MV down, it will get thinner. This makes the MV even more sensitive than usual since there’s another interaction going on. To get the most range out of this amp, experiment with Master Volume and listen how it interacts with low or high Drive settings, similar to the real amp. The breakup range/tones between is wide and dynamic and can respond to your playing dynamics, getting crunchier as you dig in and cleaner as you play lighter. The amp's Bass response should increase noticeably as you turn up the Master Volume from the default MV position. Pair it with a G12-65H speaker. Cab Pack 17 has many choices (full disclosure, I produced 5 of the 6 Cabs in that Cab Pack). The BludoMix Cab in factory firmware is a 1x12 Alnico dual port cab, and will sound good but perhaps a tad darker (great for Jazz) on clean sounds than the G12-65H will. Now, if you like, put a Zen drive in front on the BludoClean amp....or a boost...and listen to how that clean channel wakes up fast for grittier leads and touch-responsiveness. For BludoLead, take the Lead default amp values. Put the Master Volume on 5. Put drive at 4-5 and Overdrive at 4-5, and experiment with the tone stack swaps above. If you want the amp to feedback effortlessly on a note, raise the overdrive setting higher combined with the gain, provided you have sufficient volume coming out your speakers to hit your guitar pickups in a reinforcing loop, it will do it! Throw a boost or Zen drive on that, if you like..." [http://forum.fractalaudio.com/threads/dumble-ford-2-again.105028/page-2#post-1267280 source]
 
# "The model is of a 100w 6L6 BludoDrive Ojai by Bludotone amps, using Fractal's MIMIC process. The Ojai has the same schematic as the famous "Tan" boutique amp played by Robben Ford. It pairs well with the factory Rumble 4X12 cabinet. On the Ojai there is a bright cap on the Master Volume. As you turn the MV down, it will get thinner. This makes the MV even more sensitive than usual since there’s another interaction going on. To get the most range out of this amp, experiment with Master Volume and listen how it interacts with low or high Drive settings, similar to the real amp. The breakup range/tones between is wide and dynamic and can respond to your playing dynamics, getting crunchier as you dig in and cleaner as you play lighter. The amp's Bass response should increase noticeably as you turn up the Master Volume from the default MV position. Pair it with a G12-65H speaker. Cab Pack 17 has many choices (full disclosure, I produced 5 of the 6 Cabs in that Cab Pack). The BludoMix Cab in factory firmware is a 1x12 Alnico dual port cab, and will sound good but perhaps a tad darker (great for Jazz) on clean sounds than the G12-65H will. Now, if you like, put a Zen drive in front on the BludoClean amp....or a boost...and listen to how that clean channel wakes up fast for grittier leads and touch-responsiveness. For BludoLead, take the Lead default amp values. Put the Master Volume on 5. Put drive at 4-5 and Overdrive at 4-5, and experiment with the tone stack swaps above. If you want the amp to feedback effortlessly on a note, raise the overdrive setting higher combined with the gain, provided you have sufficient volume coming out your speakers to hit your guitar pickups in a reinforcing loop, it will do it! Throw a boost or Zen drive on that, if you like..." [http://forum.fractalaudio.com/threads/dumble-ford-2-again.105028/page-2#post-1267280 source]
  
Fractal Audio:
 
 
# "The tone stack in the PAB models is a neutral tone stack which is the same as lifting the ground. Put all knobs at noon if you want authentic." [http://forum.fractalaudio.com/threads/love-3-0-but.147215/page-3#post-1739726 source]
 
# "The tone stack in the PAB models is a neutral tone stack which is the same as lifting the ground. Put all knobs at noon if you want authentic." [http://forum.fractalaudio.com/threads/love-3-0-but.147215/page-3#post-1739726 source]
 
# "The tone stack in the PAB models is a neutral tone stack which is the same as lifting the ground. Put all knobs at noon if you want authentic. Unlike the amp, however, you can actually adjust the tone controls and something will happen. In the virtual realm we can have lifted tone stacks that actually still work." [http://forum.fractalaudio.com/threads/love-3-0-but.147215/page-3#post-1739726 source]
 
# "The tone stack in the PAB models is a neutral tone stack which is the same as lifting the ground. Put all knobs at noon if you want authentic. Unlike the amp, however, you can actually adjust the tone controls and something will happen. In the virtual realm we can have lifted tone stacks that actually still work." [http://forum.fractalaudio.com/threads/love-3-0-but.147215/page-3#post-1739726 source]
Line 382: Line 366:
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-bludojai-bludotone-ojai.111724/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-bludojai-bludotone-ojai.111724/ Yek's write-up]
  
==BLUDOJAI LEAD (formerly LEAD 1)==
+
==BLUDOJAI LEAD==
 +
 
 +
Formerly: BLUDOJAI LEAD 1
 +
 
 +
==BLUDOJAI LEAD PAB==
  
==BLUDOJAI LEAD PAB (formerly LEAD 2)==
+
Formerly: BLUDOJAI LEAD 2
  
 
==BOGFISH BROWN (based on Bogner Fish preamp)==
 
==BOGFISH BROWN (based on Bogner Fish preamp)==
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Models:
 
Models:
# Strato channel
+
* Strato channel
# Brown channel
+
* Brown channel
  
Strato and Brown channels: Master, Gain, Bass, Mid, Treble
+
Master, Gain, Bass, Mid, Treble
  
Fractal Audio:
 
 
# "I used the power amp models from the XTC." [https://forum.fractalaudio.com/threads/bogner-strato-and-brown-poweramp-modeling.76238/#post-931081 source]
 
# "I used the power amp models from the XTC." [https://forum.fractalaudio.com/threads/bogner-strato-and-brown-poweramp-modeling.76238/#post-931081 source]
  
Line 402: Line 389:
  
 
==BOGFISH STRATO==
 
==BOGFISH STRATO==
 
==BOUTIQUE 1 (based on Matchless Chieftain)==
 
 
[[File:chieftain.jpg|300px]]
 
 
Models:
 
# single channel
 
# boosted for more gain and high-frequency emphasis
 
 
[[Cabinet models list |Cab:]] Matchless 2x12 (G12M and G12H)
 
 
Volume, Master, Bass, Mid, Treble, Brilliance
 
 
Fractal Audio:
 
# "The secret of the Chieftain is the split cathode bias. Most "Class-A" amps use a shared cathode bias but the Chieftain uses separate cathode bias networks which results in less bias shift so there's less fizz." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-03.158240/post-1895726 source]
 
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-boutique-matchless-chieftain.111832/ Yek's write-up]
 
 
==BOUTIQUE 2==
 
  
 
==BRIT 800 (based on 50W Marshall JCM 800 2204)==
 
==BRIT 800 (based on 50W Marshall JCM 800 2204)==
Line 427: Line 395:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list |Cab:]] Marshall 4x12 (G12M, G12H, G12-75, V30)
 
[[Cabinet models list |Cab:]] Marshall 4x12 (G12M, G12H, G12-75, V30)
Line 433: Line 401:
 
Pre-Amp, Bass, Middle, Treble, Presence, Master
 
Pre-Amp, Bass, Middle, Treble, Presence, Master
  
Fractal Audio:
 
 
# "It is a very bright model. However, it sounds exactly like the amp it was based on. If it is too bright, you can adjust the various tone controls and parameters to reduce the brightness to your tastes. They are designed to be run loud and the brightness decreases as the MV is increased. The sound of 80's hair metal for sure." [https://forum.fractalaudio.com/threads/afxii-jcm800-model.38498/#post-525964 source]
 
# "It is a very bright model. However, it sounds exactly like the amp it was based on. If it is too bright, you can adjust the various tone controls and parameters to reduce the brightness to your tastes. They are designed to be run loud and the brightness decreases as the MV is increased. The sound of 80's hair metal for sure." [https://forum.fractalaudio.com/threads/afxii-jcm800-model.38498/#post-525964 source]
 
# "The saturation switch switches in a zener diode clipping stage right before the tone stack. This is the Arrendondo Mod." [http://forum.fractalaudio.com/threads/axe-fx-ii-technical-questions-thread.35997/page-38#post-494304 source]
 
# "The saturation switch switches in a zener diode clipping stage right before the tone stack. This is the Arrendondo Mod." [http://forum.fractalaudio.com/threads/axe-fx-ii-technical-questions-thread.35997/page-38#post-494304 source]
Line 452: Line 419:
 
==BRIT 800 #34 (custom model, based on Marshall JCM 800 with Santiago #34 modifications)==
 
==BRIT 800 #34 (custom model, based on Marshall JCM 800 with Santiago #34 modifications)==
  
[[file:2203.png|300px]]
+
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
 
Notes: see Brit 800
 
Notes: see Brit 800
  
Fractal Audio:
 
 
# "Based on the “Santiago #34” modifications."
 
# "Based on the “Santiago #34” modifications."
 
# "The Brit 800 #34 does a better Slash than the AFS100 IMO. The AFS100 models are based on the actual amp but I think my version of #34 sounds more like AFD. I based the model on information I've collected over the years about the mods that were done." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-7-00-firmware-release.124944/page-5#post-1486357 source]
 
# "The Brit 800 #34 does a better Slash than the AFS100 IMO. The AFS100 models are based on the actual amp but I think my version of #34 sounds more like AFD. I based the model on information I've collected over the years about the mods that were done." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-7-00-firmware-release.124944/page-5#post-1486357 source]
Line 468: Line 433:
 
==BRIT 800 MOD (custom model, based on modded Marshall JCM 800)==
 
==BRIT 800 MOD (custom model, based on modded Marshall JCM 800)==
  
[[file:2203.png|300px]]
+
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
 
Notes: see Brit 800
 
Notes: see Brit 800
  
Fractal Audio:
 
 
# "Based on popular modified Marshall JCM800. These mods make the amp “heavier” and less strident."
 
# "Based on popular modified Marshall JCM800. These mods make the amp “heavier” and less strident."
  
Line 485: Line 448:
  
 
Models:
 
Models:
# Mode: #34
+
* Amp in mode "#34"
# Mode: AFD
+
* Amp in mode "AFD"
  
 
[[Cabinet models list |Cab:]] Marshall 4x12 (V30)
 
[[Cabinet models list |Cab:]] Marshall 4x12 (V30)
Line 492: Line 455:
 
Gain, Bass, Middle, Treble, Presence, Master, #34/AFD switch
 
Gain, Bass, Middle, Treble, Presence, Master, #34/AFD switch
  
Fractal Audio:
 
 
# "I have an actual Slash signature model and spent a lot of time measuring, listening and comparing." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-2-01-firmware-release.111657/page-8#post-1337247 source]
 
# "I have an actual Slash signature model and spent a lot of time measuring, listening and comparing." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-2-01-firmware-release.111657/page-8#post-1337247 source]
 
# "The Brit 800 #34 does a better Slash than the AFS100 IMO. The AFS100 models are based on the actual amp but I think my version of #34 sounds more like AFD. I based the model on information I've collected over the years about the mods that were done." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-7-00-firmware-release.124944/page-5#post-1486357 source]
 
# "The Brit 800 #34 does a better Slash than the AFS100 IMO. The AFS100 models are based on the actual amp but I think my version of #34 sounds more like AFD. I based the model on information I've collected over the years about the mods that were done." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-7-00-firmware-release.124944/page-5#post-1486357 source]
Line 506: Line 468:
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
 
[[Cabinet models list | Cab:]] Marshall 4x12 (G12M, G12H, G12-EVH, V30, JBL D120)
 
[[Cabinet models list | Cab:]] Marshall 4x12 (G12M, G12H, G12-EVH, V30, JBL D120)
Line 524: Line 485:
 
[[file:JTM.png|300px]]
 
[[file:JTM.png|300px]]
  
Model
+
Models:
# Treble (High) channel
+
* Treble (High) channel
# jumpered channels
+
* Normal and Bright channels jumpered
  
 
[[Cabinet models list |Cab:]] Marshall 4x12 (G12M, G12H)
 
[[Cabinet models list |Cab:]] Marshall 4x12 (G12M, G12H)
Line 532: Line 493:
 
Volume Normal, Volume High Treble, Bass, Middle, Treble, Presence
 
Volume Normal, Volume High Treble, Bass, Middle, Treble, Presence
  
Fractal Audio:
 
 
# "They had no Master Volumes so people rarely got the Drive past 3.00 since it would melt your face. Without the specter of having your skin flayed off as is afforded by a model of the amp, the temptation is to turn the Drive way up. When you do this the low notes get very muddy. Single notes can form an almost perfect square wave which will sound like a synthesizer." [http://forum.fractalaudio.com/threads/jm45-and-jm45-jump-sound-horrible-for-low-e-and-a-strings-not-a-bug.76286/#post-931633 source]
 
# "They had no Master Volumes so people rarely got the Drive past 3.00 since it would melt your face. Without the specter of having your skin flayed off as is afforded by a model of the amp, the temptation is to turn the Drive way up. When you do this the low notes get very muddy. Single notes can form an almost perfect square wave which will sound like a synthesizer." [http://forum.fractalaudio.com/threads/jm45-and-jm45-jump-sound-horrible-for-low-e-and-a-strings-not-a-bug.76286/#post-931633 source]
 
# "Our reference amp has a 100 pF bright cap. Many JTM45s did not but I think they sound better with one. A JTM45 with a bright cap is similar to a Superlead. If you want the Channel 1 sound with an Axe-Fx use the Brit JM45 Jump model and turn the Treble Drive knob all the way down." [http://www.thegearpage.net/board/index.php?threads/fractal-vs-helix-the-comparison-series-made-by-yours-truly.1757067/page-2#post-22868763 source]
 
# "Our reference amp has a 100 pF bright cap. Many JTM45s did not but I think they sound better with one. A JTM45 with a bright cap is similar to a Superlead. If you want the Channel 1 sound with an Axe-Fx use the Brit JM45 Jump model and turn the Treble Drive knob all the way down." [http://www.thegearpage.net/board/index.php?threads/fractal-vs-helix-the-comparison-series-made-by-yours-truly.1757067/page-2#post-22868763 source]
Line 540: Line 500:
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-jm45-marshall-jtm-45.112030/#post-1339718 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-jm45-marshall-jtm-45.112030/#post-1339718 Yek's write-up]
  
==BRIT JM45 JUMP==
+
==BRIT JM45 JUMPED==
  
 
==BRIT JVM OD1 GREEN (based on Marshall JVM410H)==
 
==BRIT JVM OD1 GREEN (based on Marshall JVM410H)==
Line 546: Line 506:
 
[[file:jvm.png|300px]]
 
[[file:jvm.png|300px]]
  
Model:
+
Models:
# OD1 Green
+
* OD1 Green
# OD1 Orange
+
* OD1 Orange
# OD1 Red
+
* OD1 Red
# OD2 Green
+
* OD2 Green
# OD2 Orange
+
* OD2 Orange
# OD2 Red
+
* OD2 Red
  
 
[[Cabinet models list |Cab:]] Marshall 4x12 (V30 and G12H)
 
[[Cabinet models list |Cab:]] Marshall 4x12 (V30 and G12H)
  
Master, Bass, Middle, Treble, Gain, Presence, Resonance, Reverb
+
Master, Bass, Middle, Treble, Gain, Presence, Resonance, Reverb (not modeled)
  
Fractal Audio:
 
 
# "IMO, the reason the JVM sounds good is the plate cap on the second-to-last triode. That smooths out the tone considerably. The second-to-last triode is associated with "Triode 1 Freq" in the advanced parameters. You can adjust this to simulate adding a cap to the plate. The other thing that helps the tone is the 220K plate resistor on the last triode. This shifts the bias point down vs. a "classic" Marshall. Unfortunately the bias points aren't exposed to the user." [https://forum.fractalaudio.com/threads/holy-crap-the-new-jvm-sounds-great.44628/#post-588030 source]
 
# "IMO, the reason the JVM sounds good is the plate cap on the second-to-last triode. That smooths out the tone considerably. The second-to-last triode is associated with "Triode 1 Freq" in the advanced parameters. You can adjust this to simulate adding a cap to the plate. The other thing that helps the tone is the 220K plate resistor on the last triode. This shifts the bias point down vs. a "classic" Marshall. Unfortunately the bias points aren't exposed to the user." [https://forum.fractalaudio.com/threads/holy-crap-the-new-jvm-sounds-great.44628/#post-588030 source]
 
# "The JVM has a huge plate resistor on the cathode follower, the JS does not." [https://forum.fractalaudio.com/threads/jvm-sounding-weird.150157/page-2#post-1785256 source]
 
# "The JVM has a huge plate resistor on the cathode follower, the JS does not." [https://forum.fractalaudio.com/threads/jvm-sounding-weird.150157/page-2#post-1785256 source]
# (about the compression on OD 1 Orange and Red):
+
# (about OD 1 Orange and Red compression):
 
#* "Real amp does this. Poor cathode follower design."
 
#* "Real amp does this. Poor cathode follower design."
 
#* (why doesn't this happen with the Green channel) "Because the Green channel only has one tone stack hanging off the cathode follower."
 
#* (why doesn't this happen with the Green channel) "Because the Green channel only has one tone stack hanging off the cathode follower."
Line 583: Line 542:
  
 
Model:
 
Model:
# OD channel
+
* OD channel
  
Volume, Gain, Bass, Mid, Treble, Presence, Bass shift
+
Volume, Gain, Bass, Mid, Treble, Presence, Bass Shift (not modeled)
  
Fractal Audio:
 
 
# "The two channels have preset tone stacks. Then there is a digitally controlled 4-band graphic EQ which is the B/M/T and Presence. This technique gets around the problem of trying to digitally control a tone stack. The Triaxis uses LDRs in place of potentiometers. The Soldano X-99 uses motorized pots. Both techniques being expensive. So the JMP-1 uses a fixed tone stack and then a digitally controlled graphic EQ. The Axe-Fx model of the JMP-1 is "better" in the sense that the tone controls control the tone stack rather than a graphic EQ. You then have the separate graphic EQ to further tailor the sound. What I didn't do, and why people probably feel the model differs, is "normalize" the tone controls so that with B/M/T at noon the tone stacks match. On the Axe-Fx you might need to set the Bass to 3, Mid to 7, etc. to get the tone to match. I just used a standard Marshall tone stack whereas the JMP-1 uses a standard Marshall tone stack but the pots are replaced with fixed resistors but those values don't necessarily correspond to the pots at noon." [https://forum.fractalaudio.com/posts/1228348/ source]
 
# "The two channels have preset tone stacks. Then there is a digitally controlled 4-band graphic EQ which is the B/M/T and Presence. This technique gets around the problem of trying to digitally control a tone stack. The Triaxis uses LDRs in place of potentiometers. The Soldano X-99 uses motorized pots. Both techniques being expensive. So the JMP-1 uses a fixed tone stack and then a digitally controlled graphic EQ. The Axe-Fx model of the JMP-1 is "better" in the sense that the tone controls control the tone stack rather than a graphic EQ. You then have the separate graphic EQ to further tailor the sound. What I didn't do, and why people probably feel the model differs, is "normalize" the tone controls so that with B/M/T at noon the tone stacks match. On the Axe-Fx you might need to set the Bass to 3, Mid to 7, etc. to get the tone to match. I just used a standard Marshall tone stack whereas the JMP-1 uses a standard Marshall tone stack but the pots are replaced with fixed resistors but those values don't necessarily correspond to the pots at noon." [https://forum.fractalaudio.com/posts/1228348/ source]
 
# "The JMP-1 tone controls have more range than the actual preamp. The preamp has about +/- 8 dB for each tone control while the model has the standard +/- 12 dB."
 
# "The JMP-1 tone controls have more range than the actual preamp. The preamp has about +/- 8 dB for each tone control while the model has the standard +/- 12 dB."
Line 593: Line 551:
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-pre-and-brit-jmpre-1-marshall-jmp-1.112139/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-pre-and-brit-jmpre-1-marshall-jmp-1.112139/ Yek's write-up]
  
==BRIT SILVER (based on 100W Marshall 2555 Silver Jubilee)==
+
==BRIT SILVER (based on 100W Lerxst Omega / Marshall 2555 Silver Jubilee)==
  
[[file:jubilee.png|300px]]
+
[[file:Lerxst.jpg|300px]]
  
 
Model:
 
Model:
# Lead channel
+
* Lead channel
  
 
[[Cabinet models list |Cab:]] Marshall 4x12 (V30)
 
[[Cabinet models list |Cab:]] Marshall 4x12 (V30)
  
 
Presence, Bass, Middle, Treble, Gain, Master
 
Presence, Bass, Middle, Treble, Gain, Master
 +
 +
# "Our reference amp for the Silver Jubilee is actually not a Silver Jubilee. It's a Lerxst Omega that Alex Lifeson gave me." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-5-cygnus-firmware-public-beta-2.170901/post-2058221 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-silver-marshall-silver-jubilee.112184 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-silver-marshall-silver-jubilee.112184 Yek's write-up]
Line 611: Line 571:
  
 
Model:
 
Model:
# AFD mode
+
* Marshall AFD100 in AFD mode
  
 
Notes: see Brit AFS100
 
Notes: see Brit AFS100
  
Fractal Audio:
 
 
# "Brit Super model is based on the Marshall AFD100." [https://forum.fractalaudio.com/threads/great-sound-with-my-splawn-nitro-4cm-im-blown-away.55549/#post-700713 source]
 
# "Brit Super model is based on the Marshall AFD100." [https://forum.fractalaudio.com/threads/great-sound-with-my-splawn-nitro-4cm-im-blown-away.55549/#post-700713 source]
  
==BUTTERY (custom model, loosely based on Budda Twinmaster)==
+
==BUDDAH DUOMASTER (based on Budda Twinmaster)==
  
[[File:budda.jpg|300px]]
+
[[File:Logo small.png]]
  
 
Model:
 
Model:
# custom Fractal Audio model
 
  
Fractal Audio:
+
* Single channel
 +
 
 +
[[Cabinet_models_list|Cab]]: 1x15 Budda Phat 15 or 1x12 Budda Phat 12
 +
 
 +
Bass, Treble, Volume
 +
 
 +
# "I bought a Budda Twinmaster, pulled it apart and traced the circuit since I couldn't find a schematic for it anywhere. Funky amp. Paraphase phase inverter. Weird Bridge-T sorta tone stack. I'm convinced the feedback is connected to the wrong node but I quadruple-checked and my schematic is definitely correct. I think it was probably a mistake but then they said "Hmmm, but it sounds good so don't fix it"." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-12-cygnus-firmware-public-release-candidate.172027/post-2075782 source]
 +
 
 +
Formerley: BUTTERY, custom Fractal Audio model
 +
 
 
# "I did the Buttery model by ear. I listened to some clips of Buddas (Matchbox 20... excellent!) and tweaked the model until I thought it sounded like one. Screwed around a little with the tube bias points until it had the right balance of harmonics and called it a day."
 
# "I did the Buttery model by ear. I listened to some clips of Buddas (Matchbox 20... excellent!) and tweaked the model until I thought it sounded like one. Screwed around a little with the tube bias points until it had the right balance of harmonics and called it a day."
 
# "It's still the "ear tuned" version. I bought the amp but because it was so popular as-is I didn't dare change it." [https://forum.fractalaudio.com/threads/question-for-cliff-regarding-the-buttery-model.90943/#post-1095174 source]
 
# "It's still the "ear tuned" version. I bought the amp but because it was so popular as-is I didn't dare change it." [https://forum.fractalaudio.com/threads/question-for-cliff-regarding-the-buttery-model.90943/#post-1095174 source]
 
# "Buttery is a virtual amp model that was created by ear. There is no physical, real amp that exists upon which it was based. It's like the FAS models. They exist solely in the virtual world. They all still benefit from the Quantum stuff though as they use the same underlying algorithms for the tube modeling. The amp model, regardless of how accurate it is (and it's probably grossly inaccurate as I never compared it to any actual amp) is very popular and that's why it was never matched to any real amp." [http://forum.fractalaudio.com/threads/question-for-cliff-regarding-the-buttery-model.90943/page-2#post-1283301 source]
 
# "Buttery is a virtual amp model that was created by ear. There is no physical, real amp that exists upon which it was based. It's like the FAS models. They exist solely in the virtual world. They all still benefit from the Quantum stuff though as they use the same underlying algorithms for the tube modeling. The amp model, regardless of how accurate it is (and it's probably grossly inaccurate as I never compared it to any actual amp) is very popular and that's why it was never matched to any real amp." [http://forum.fractalaudio.com/threads/question-for-cliff-regarding-the-buttery-model.90943/page-2#post-1283301 source]
 +
# "Yeah, Buttery was a legacy model from the first Axe-Fx." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-12-cygnus-firmware-public-release-candidate.172027/post-2075782 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-buttery-budda-twinmaster.112228/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-buttery-budda-twinmaster.112228/ Yek's write-up]
Line 637: Line 605:
  
 
Models:
 
Models:
# Clean channel
+
* Clean channel
# Rhythm channel
+
* Rhythm channel
# Lead channel
+
* Lead channel
  
 
Gain, Bass, Middle, Treble, Master, Bright switch. Active tube EQ: Treble and Bass
 
Gain, Bass, Middle, Treble, Master, Bright switch. Active tube EQ: Treble and Bass
  
Fractal Audio:
 
 
# "The CA3+SE model is basically an OD100." [https://forum.fractalaudio.com/threads/is-the-suhr-od-100-in-the-axe.75090/#post-918169 source]
 
# "The CA3+SE model is basically an OD100." [https://forum.fractalaudio.com/threads/is-the-suhr-od-100-in-the-axe.75090/#post-918169 source]
 
# "An OD100 is the head version of a CAE 3+."  
 
# "An OD100 is the head version of a CAE 3+."  
Line 653: Line 620:
  
 
==CA3+ RHYTHM==
 
==CA3+ RHYTHM==
 
==CALI LEGGY (based on Carvin Legacy VL100)==
 
 
[[file:legacy.jpg|300px]] 
 
 
Model:
 
# Lead channel
 
 
[[Cabinet models list |Cab:]] Carvin 2x12 or 4x12 (V30)
 
 
Presence, Treble (11kHz), Mid (650Hz), Bass (80Hz), Drive, Volume
 
 
Fractal Audio:
 
# "The thing that makes a Legacy unique is the tone stack. It uses a "James" tone stack which is more like hi-fi tone controls."
 
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-cali-leggy-and-legato-100-carvin-legacy-vl100.112449 Yek's write-up]
 
  
 
==CAMERON CCV 1A (based on Cameron CCV-100)==
 
==CAMERON CCV 1A (based on Cameron CCV-100)==
Line 675: Line 626:
  
 
Models:
 
Models:
# (1A) channel 1, less gain
+
* (1A) Channel 1, less gain
# (1B) channel 1, more gain
+
* (1B) Channel 1, more gain
# (2A) channel 2, Bright1 switch left, Bright2 switch left, Gain Style switch left
+
* (2A) Channel 2, Bright1 switch left, Bright2 switch left, Gain Style switch left
# (2B) channel 2, Bright1 switch left, Bright2 switch right, Gain Style switch left
+
* (2B) Channel 2, Bright1 switch left, Bright2 switch right, Gain Style switch left
# (2C) channel 2, Bright1 switch left, Bright2 switch left, Gain Style switch right
+
* (2C) Channel 2, Bright1 switch left, Bright2 switch left, Gain Style switch right
# (2D) channel 2, Bright1 switch left, Bright2 switch right, Gain Style switch right ([https://forum.fractalaudio.com/threads/just-a-heads-up.97371/#post-1168902 source])
+
* (2D) Channel 2, Bright1 switch left, Bright2 switch right, Gain Style switch right ([https://forum.fractalaudio.com/threads/just-a-heads-up.97371/#post-1168902 source])
  
 
Channel 1: Punch (= Resonance / Depth), Presence, Master, Bass, Middle, Treble and Gain, 3-way Voicing switch (resonance), 3-way Dark switch (presence), 3-way Gain Style switch (“Jose Master” gain/clipping), 3-way Bright switch (less noticeable at higher gain settings)
 
Channel 1: Punch (= Resonance / Depth), Presence, Master, Bass, Middle, Treble and Gain, 3-way Voicing switch (resonance), 3-way Dark switch (presence), 3-way Gain Style switch (“Jose Master” gain/clipping), 3-way Bright switch (less noticeable at higher gain settings)
Line 686: Line 637:
 
Channel 2: Punch (= Resonance / Depth), Presence, Solo Master, Master, Bass, Middle, Treble, two Gain controls, 3-way Gain Style switch, two Bright switches, Drive switch
 
Channel 2: Punch (= Resonance / Depth), Presence, Solo Master, Master, Bass, Middle, Treble, two Gain controls, 3-way Gain Style switch, two Bright switches, Drive switch
  
The 2C and 2D models are lower in output level because of the Sat switch.
+
The 2C and 2D models have lower output because of the Sat switch position.
  
Fractal Audio:
 
 
# "The amp was modeled with the Voicing switch in the middle position. The "Dark" switch is the Negative feedback control. Set Negative Feedback to 3.6 to reproduce the switch in the middle position. Set it to 9.8 to reproduce the switch in the right position. 5.0 for left position (default). The amp has a dozen switches and, frankly, there isn't a lot of difference between some of the settings. The Drive switch sounds virtually identical whether left or right. I don't like it in the middle." [https://forum.fractalaudio.com/threads/just-a-heads-up.97371/#post-1168912 source]
 
# "The amp was modeled with the Voicing switch in the middle position. The "Dark" switch is the Negative feedback control. Set Negative Feedback to 3.6 to reproduce the switch in the middle position. Set it to 9.8 to reproduce the switch in the right position. 5.0 for left position (default). The amp has a dozen switches and, frankly, there isn't a lot of difference between some of the settings. The Drive switch sounds virtually identical whether left or right. I don't like it in the middle." [https://forum.fractalaudio.com/threads/just-a-heads-up.97371/#post-1168912 source]
 
# (about the Drive knob) "Our reference amp has a linear taper pot so the behavior is very abrupt. The model matches the amp extremely accurately (as do all G3 models)." [https://forum.fractalaudio.com/threads/fw-18-01-camron-ccv-not-a-bug.97385/#post-1168811 source]
 
# (about the Drive knob) "Our reference amp has a linear taper pot so the behavior is very abrupt. The model matches the amp extremely accurately (as do all G3 models)." [https://forum.fractalaudio.com/threads/fw-18-01-camron-ccv-not-a-bug.97385/#post-1168811 source]
Line 694: Line 644:
 
# "Yes, it's actually not a very high gain amp. The topology is very similar to a JCM800." [https://forum.fractalaudio.com/threads/fw-18-01-camron-ccv-not-a-bug.97385/#post-1169347 source]
 
# "Yes, it's actually not a very high gain amp. The topology is very similar to a JCM800." [https://forum.fractalaudio.com/threads/fw-18-01-camron-ccv-not-a-bug.97385/#post-1169347 source]
 
# "The key to the CCV sound is the Sat Switch." [https://forum.fractalaudio.com/posts/1169015/ source]
 
# "The key to the CCV sound is the Sat Switch." [https://forum.fractalaudio.com/posts/1169015/ source]
 +
# "Camerons have linear taper MV and you need it with them because the signal level into the power amp is very low due to the Jose topology." [https://forum.fractalaudio.com/threads/mv-poll.170996/post-2059425 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-cameron-ccv.112486/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-cameron-ccv.112486/ Yek's write-up]
Line 712: Line 663:
  
 
Models:
 
Models:
# (1A) channel 1, EQ Bypass off, Boost off
+
* (1A) Channel 1, EQ Bypass switch OFF, Boost switch OFF
# (1B) channel 1, EQ Bypass engaged, Boost on
+
* (1B) Channel 1, EQ Bypass switch engaged (no Bass / Middle / Treble), Boost switch ON
# (2A) channel 2, Edge off
+
* (2A) Channel 2, Edge switch OFF
# (2B) channel 2, Edge on
+
* (2B) Channel 2, Edge switch ON
# (3A) channel 3, Edge off
+
* (3A) Channel 3, Edge switch OFF
# (3B) channel 3, Edge on
+
* (3B) Channel 3, Edge switch ON
  
 
[[Cabinet models list |Cab:]] Hook 2x12 or 4x12 (V30, G12H, G12-65, WGS)
 
[[Cabinet models list |Cab:]] Hook 2x12 or 4x12 (V30, G12H, G12-65, WGS)
  
Channel 1: Gain (with Pull function), Level, Bass, Mid, Treble, Boost switch, EQ bypass switch, Bright switch. Shared: Presence and Balls
+
Channel 1: Gain (with Pull function), Level, Bass, Mid, Treble, Boost switch (not modeled), EQ bypass switch, Bright switch. Shared: Presence and Balls
  
 
Channels 2 and 3: Gain, Level, Bass, Mid, Treble, Boost switch, Edge switch (changes tone stack). Shared: Presence and Balls
 
Channels 2 and 3: Gain, Level, Bass, Mid, Treble, Boost switch, Edge switch (changes tone stack). Shared: Presence and Balls
  
Fractal Audio:
 
 
# "This amp uses a mu follower which yields a complex distortion with smooth decay. To simulate the Boost switch use the Boost switch in the amp block as it has the same amount of gain."​ [https://forum.fractalaudio.com/posts/1426113/ source]
 
# "This amp uses a mu follower which yields a complex distortion with smooth decay. To simulate the Boost switch use the Boost switch in the amp block as it has the same amount of gain."​ [https://forum.fractalaudio.com/posts/1426113/ source]
 
# "A mu follower is similar to a cascode configuration except the output is off the cathode instead of the plate. So the output impedance is lower." [http://forum.fractalaudio.com/threads/the-hook.120307/#post-1432379 source]
 
# "A mu follower is similar to a cascode configuration except the output is off the cathode instead of the plate. So the output impedance is lower." [http://forum.fractalaudio.com/threads/the-hook.120307/#post-1432379 source]
# (to mimic Pull Gain on clean channel) "Just set the Tonestack Type to Hook Clean 2." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-5-00-firmware-released.120358/page-10#post-1433059 source]
+
# (mimic Pull Gain on clean channel) "Just set the Tonestack Type to Hook Clean 2." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-5-00-firmware-released.120358/page-10#post-1433059 source]
 
# "The Capt. Hook's "thing" is that it's basically a JCM800 with the cathode follower replaced by a mu-follower. A mu-follower doesn't compress and distort like a cathode follower does. This results in the amp sounding more open and smoother." [http://forum.fractalaudio.com/threads/recommended-adjustment.133602/page-2#post-1579933 source]
 
# "The Capt. Hook's "thing" is that it's basically a JCM800 with the cathode follower replaced by a mu-follower. A mu-follower doesn't compress and distort like a cathode follower does. This results in the amp sounding more open and smoother." [http://forum.fractalaudio.com/threads/recommended-adjustment.133602/page-2#post-1579933 source]
 
# "The Hook Clean 1 is a Fender style tonestack which has a lot more insertion loss than the others." [https://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-5-00-firmware-released.120358/page-10#post-1433058 source]
 
# "The Hook Clean 1 is a Fender style tonestack which has a lot more insertion loss than the others." [https://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-5-00-firmware-released.120358/page-10#post-1433058 source]
Line 750: Line 700:
  
 
Model:
 
Model:
# single channel
+
*  Single channel
  
 
[[Cabinet models list |Cab:]] Carr 1x12 (Eminence Elsinore)
 
[[Cabinet models list |Cab:]] Carr 1x12 (Eminence Elsinore)
  
Volume, Treble, Middle, Bass, Pentode/Triode, Reverb, Tremolo
+
Volume, Treble, Middle, Bass, Pentode/Triode (not modeled), Reverb (not modeled), Tremolo
  
Fractal Audio:
 
 
# "It's basically a Deluxe Reverb preamp with a cathode bias 6L6 power amp and no negative feedback. Sort of a Fender-meets-Vox thing." [https://forum.fractalaudio.com/threads/carr.78974/#post-960532 source]
 
# "It's basically a Deluxe Reverb preamp with a cathode bias 6L6 power amp and no negative feedback. Sort of a Fender-meets-Vox thing." [https://forum.fractalaudio.com/threads/carr.78974/#post-960532 source]
  
Line 768: Line 717:
 
* Overdrive channel
 
* Overdrive channel
  
Master, Pre Gain, Drive, Bass, Middle, Treble, Presence, Sparkle, Shift switch
+
Master, Pre Gain, Drive, Bass, Middle, Treble, Presence, Sparkle (not modeled), Shift switch (not modeled)
 +
 
 +
# "CAs are definitely dark amps. Sound great though." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-10-cygnus-firmware-public-beta-7.171198/post-2066490 source]
  
 
Alan Phillips:
 
Alan Phillips:
Line 782: Line 733:
  
 
Models:
 
Models:
# Clean channel
+
* Clean channel
# Classic channel
+
* Classic channel
# Modern channel
+
* Modern channel
  
 
[[Cabinet models list|Cab:]] Carol-Ann 1x12 (Scholz Classic)
 
[[Cabinet models list|Cab:]] Carol-Ann 1x12 (Scholz Classic)
Line 790: Line 741:
 
Input Level, Drive on channels 2 and 3, Bass, Middle, Treble, Presence, Master, Classic/Modern voicing switching
 
Input Level, Drive on channels 2 and 3, Bass, Middle, Treble, Presence, Master, Classic/Modern voicing switching
  
Fractal Audio:
 
 
# "This TripTik is badass. Dumble meets Marshall with a sprinkle of 5150 power amp." [https://forum.fractalaudio.com/threads/since-10-06-came-out.70996/#post-870346 source]
 
# "This TripTik is badass. Dumble meets Marshall with a sprinkle of 5150 power amp." [https://forum.fractalaudio.com/threads/since-10-06-came-out.70996/#post-870346 source]
 
# "I think what people like about this amp is the same reason people like the BE/HBE. These amps share the same aggressive low-cut on the input and then add bass back in the power amp. This gives clear bass response without getting flubby."  
 
# "I think what people like about this amp is the same reason people like the BE/HBE. These amps share the same aggressive low-cut on the input and then add bass back in the power amp. This gives clear bass response without getting flubby."  
 
# (speaker) "It's a Scholz Classic." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-15-00-released.87350/page-7#post-1057172 source]
 
# (speaker) "It's a Scholz Classic." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-15-00-released.87350/page-7#post-1057172 source]
 
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
 
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
 +
# "CAs are definitely dark amps. Sound great though." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-10-cygnus-firmware-public-beta-7.171198/post-2066490 source]
  
 
Alan Phillips from Carol-Ann:
 
Alan Phillips from Carol-Ann:
 
# (Classic mode): "On the real amp, you would set the Input level at 2 O'clock and the Gain at 1 to 2 O'clock to get a great classic rock rhythm tone. It's not overly different in character to the modern setting, less gain and less low end essentially."
 
# (Classic mode): "On the real amp, you would set the Input level at 2 O'clock and the Gain at 1 to 2 O'clock to get a great classic rock rhythm tone. It's not overly different in character to the modern setting, less gain and less low end essentially."
# "It does classic rock extremely well and has one of the best clean channels I've ever deisgned." [https://www.thegearpage.net/board/index.php?threads/carol-ann-od2r-the-best.1908068/#post-25776544 source]
+
# "It does classic rock extremely well and has one of the best clean channels I've ever designed." [https://www.thegearpage.net/board/index.php?threads/carol-ann-od2r-the-best.1908068/#post-25776544 source]
  
 
[https://forum.fractalaudio.com/posts/876331/ Yek's write-up]
 
[https://forum.fractalaudio.com/posts/876331/ Yek's write-up]
Line 811: Line 762:
  
 
Models:
 
Models:
# Clean channel
+
* Clean channel
# Lead channel
+
* Lead channel
  
 
Input Level, Bass, Mid, Treble, Gain (Overdrive channels), Master (all channels), Presence
 
Input Level, Bass, Mid, Treble, Gain (Overdrive channels), Master (all channels), Presence
 +
 +
# "One of the best amps in the world IMO. I have a Dumble and a Trainwreck and various other boutique amps and the Tucana is better than all of them." [https://forum.fractalaudio.com/posts/1153214/ source]
 +
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
 +
# "CAs are definitely dark amps. Sound great though." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-10-cygnus-firmware-public-beta-7.171198/post-2066490 source]
  
 
Carol-Ann:
 
Carol-Ann:
Line 822: Line 777:
 
# "Real world, it has the same amount of actual gain as the Triptik. Way more than most people would need for recording or live playing. Input gain on 10 o clock, gain on 2 o clock is a 70s /80s lead tone, put the input level up to 2 o click and it's a very sustained lead tone or a very modern heavy rhythm tone." [https://forum.fractalaudio.com/posts/1049530/ source]
 
# "Real world, it has the same amount of actual gain as the Triptik. Way more than most people would need for recording or live playing. Input gain on 10 o clock, gain on 2 o clock is a 70s /80s lead tone, put the input level up to 2 o click and it's a very sustained lead tone or a very modern heavy rhythm tone." [https://forum.fractalaudio.com/posts/1049530/ source]
 
# "You don't need to crank the real amp to get a ton of overdrive. I actually designed the original for myself and I play in a rock cover band. There's nowhere I would ever be able to get the amp to the point of pushing the power tubes in to overdrive. You gain stage a design based on its application. For a design that needs a lot of overdrive at a low volume, you do most of that and the harmonic makeup in the preamp. The Tucana falls in to this category. The master volumes in a 500 seat club rarely get above 10 O Clock on the real amp and at that point there's still tons of clean headroom left. Of course the power amp adds to the harmonic content, but it adds very little overdrive. Another interesting point to note is that the Tucana has a high pass filter in the power amp feedback loop, which gives you a nice tight low end because the bass is subjected to more gain. For an amp designed to be pushed hard in to power tube overdrive, this should be omitted as all bets are off in the feedback loop when you hit the rails. In other words that filter requires headroom to function properly, as does the presence control of any amp where it's a component of the feedback loop." [https://forum.fractalaudio.com/posts/1050147/ source]
 
# "You don't need to crank the real amp to get a ton of overdrive. I actually designed the original for myself and I play in a rock cover band. There's nowhere I would ever be able to get the amp to the point of pushing the power tubes in to overdrive. You gain stage a design based on its application. For a design that needs a lot of overdrive at a low volume, you do most of that and the harmonic makeup in the preamp. The Tucana falls in to this category. The master volumes in a 500 seat club rarely get above 10 O Clock on the real amp and at that point there's still tons of clean headroom left. Of course the power amp adds to the harmonic content, but it adds very little overdrive. Another interesting point to note is that the Tucana has a high pass filter in the power amp feedback loop, which gives you a nice tight low end because the bass is subjected to more gain. For an amp designed to be pushed hard in to power tube overdrive, this should be omitted as all bets are off in the feedback loop when you hit the rails. In other words that filter requires headroom to function properly, as does the presence control of any amp where it's a component of the feedback loop." [https://forum.fractalaudio.com/posts/1050147/ source]
 
Fractal Audio:
 
# "One of the best amps in the world IMO. I have a Dumble and a Trainwreck and various other boutique amps and the Tucana is better than all of them." [https://forum.fractalaudio.com/posts/1153214/ source]
 
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
 
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-ca-tucana-carol-ann-tucana-3.112349/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-ca-tucana-carol-ann-tucana-3.112349/ Yek's write-up]
Line 836: Line 787:
  
 
Models:
 
Models:
# Clean channel
+
* Clean channel
# Dirty channel
+
* Dirty channel
  
 
[[Cabinet models list |Cab:]] Orange 2x12 (V30)
 
[[Cabinet models list |Cab:]] Orange 2x12 (V30)
Line 852: Line 803:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list |Cab:]] Orange bass cab
 
[[Cabinet models list |Cab:]] Orange bass cab
Line 865: Line 816:
  
 
Model:
 
Model:
# Dirty channel
+
* Dirty channel
  
 
[[Cabinet models list | Cab:]] Orange 4x12 (V30)
 
[[Cabinet models list | Cab:]] Orange 4x12 (V30)
Line 871: Line 822:
 
Dirty channel: Volume, Gain, Treble, Middle, Bass, Reverb
 
Dirty channel: Volume, Gain, Treble, Middle, Bass, Reverb
  
Fractal Audio:
 
 
# "The model is based on a MKII." [https://forum.fractalaudio.com/posts/1109941/ source]
 
# "The model is based on a MKII." [https://forum.fractalaudio.com/posts/1109941/ source]
 
# "The power amp in a Rockerverb has very little negative feedback so it will boost the highs more than most power amps." [https://forum.fractalaudio.com/threads/sorting-out-the-high-end.117233/#post-1398890 source]
 
# "The power amp in a Rockerverb has very little negative feedback so it will boost the highs more than most power amps." [https://forum.fractalaudio.com/threads/sorting-out-the-high-end.117233/#post-1398890 source]
 +
# "It's not a super high gain amp. It's called a Rockerverb not a Metalverb. It's only got four gain stages and there's significant padding between stages." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-12-cygnus-firmware-public-release-candidate.172027/post-2077006 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-citrus-rv50-orange-rockerverb-50-mk-ii.112668/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-citrus-rv50-orange-rockerverb-50-mk-ii.112668/ Yek's write-up]
Line 882: Line 833:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Orange 1x12 or 2x12 (G12H)
 
[[Cabinet models list | Cab:]] Orange 1x12 or 2x12 (G12H)
  
Volume, Gain, Tone (High Cut), 7w/15w switch
+
Volume, Gain, Tone (High Cut), 7w/15w switch (not modeled)
  
Fractal Audio:
 
 
# "The actual amp has no tone stack and a single tone control. The tone control is actually a high cut control in the power amp and is therefore replicated by the Hi Cut parameter."
 
# "The actual amp has no tone stack and a single tone control. The tone control is actually a high cut control in the power amp and is therefore replicated by the Hi Cut parameter."
 
# "It's inaudible when clean." [https://forum.fractalaudio.com/posts/1063208/ source]
 
# "It's inaudible when clean." [https://forum.fractalaudio.com/posts/1063208/ source]
Line 899: Line 849:
  
 
Model:
 
Model:
# Top Boost channel
+
* Top Boost channel
  
 
[[Cabinet models list | Cab:]] Vox 1x12 (G12M, Alnico)
 
[[Cabinet models list | Cab:]] Vox 1x12 (G12M, Alnico)
Line 912: Line 862:
  
 
Models:
 
Models:
# AC-30 (non-Top Boost)
+
* AC-30: Normal channel of AC30HW
# AC-30 Bright (non-Top Boost)
+
* AC-30 Bright: Normal channel, Brilliance input
# AC-30HW Hot mode
+
* AC-30 Hot: Top Boost channel of AC30HW, in "Hot" mode (no Bass / Treble)
# AC-30 Top Boost
+
* AC-30 TB: Top Boost channel of AC30HW, in "Cool" mode
  
 
[[Cabinet models list | Cab:]] Vox 2x12 (Alnico, G12M)
 
[[Cabinet models list | Cab:]] Vox 2x12 (Alnico, G12M)
  
* AC-30 (not Top Boost): Volume, Bright switch
+
Volume, Bright switch (Normal channel), Treble/Bass (Top Boost channel), Hot/Cool switch (Top Boost channel), Tone Cut, Master
* AC-30 Bright: Volume, High Cut
 
* AC-30 Hot: Volume, High Cut, Master
 
* Top Boost: Volume, Bass, Treble, High Cut
 
* Hardwired: Hot/Cool switch
 
  
Fractal Audio:
+
# "Note that the particular AC-30 used for the model has this scratchy high end. (...) It's a hand-wired version and that can lead to this type of sound as the parasitics cause boosting of the very high frequencies when the amp is driven hard." [https://forum.fractalaudio.com/posts/970333/ source]
# "Note that the particular AC-30 used for the model has this scratchy high end. This is reflected in the high Dyn Pres value. It's a hand-wired version and that can lead to this type of sound as the parasitics cause boosting of the very high frequencies when the amp is driven hard. The obvious solution is to turn Dyn Pres down." [https://forum.fractalaudio.com/posts/970333/ source]
 
 
# "I intentionally limited the midrange notch since, IMO, it's a design flaw in that tone stack. But you can recover that behavior by setting the Mid control fully CCW. Modern AC30's don't have this flaw. They use a Fender-style tone stack with a fixed mid resistor."  
 
# "I intentionally limited the midrange notch since, IMO, it's a design flaw in that tone stack. But you can recover that behavior by setting the Mid control fully CCW. Modern AC30's don't have this flaw. They use a Fender-style tone stack with a fixed mid resistor."  
 
# "The bright cap value is normalized to a Drive pot of 1M. An AC30 has a 500K pot so the value will read out as half the actual value. IOW, it's displaying 60 pF which is equivalent to 120 pF." [https://forum.fractalaudio.com/posts/1064264/ source]  
 
# "The bright cap value is normalized to a Drive pot of 1M. An AC30 has a 500K pot so the value will read out as half the actual value. IOW, it's displaying 60 pF which is equivalent to 120 pF." [https://forum.fractalaudio.com/posts/1064264/ source]  
Line 934: Line 879:
 
# "The reference AC30 is an AC30HWHD." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-07.150305/page-6#post-1788283 source]
 
# "The reference AC30 is an AC30HWHD." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-07.150305/page-6#post-1788283 source]
 
# "Our Vox models are based on a fairly new AC30HWHD head. The model matches that particular amp very well. Will it match an AC30 from a different era exactly? Probably not." [https://forum.fractalaudio.com/threads/how-accurate-is-fractals-amp-modeling.168786/post-2027668 source]
 
# "Our Vox models are based on a fairly new AC30HWHD head. The model matches that particular amp very well. Will it match an AC30 from a different era exactly? Probably not." [https://forum.fractalaudio.com/threads/how-accurate-is-fractals-amp-modeling.168786/post-2027668 source]
 +
# "The normal channel on a Vox would be closest to the Morgan. The Brilliant channel is a "Top Boost" which means it has a tone stack and a significant midrange cut. The normal channel has no tone stack. You can't compare a a Morgan AC20 to the Brilliant channel of an AC30 and declare that one sounds better than the other. Totally different preamps and, therefore, different sound. Personally I think the AC20 is a better amp. Better made, better quality components, much better transformers. If you want that chimey AC30 sound you put an EQ before it and suck out some mids." [https://forum.fractalaudio.com/threads/how-accurate-is-fractals-amp-modeling.168786/post-2064189 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-class-a-30w-vox-ac-30.112787/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-class-a-30w-vox-ac-30.112787/ Yek's write-up]
Line 948: Line 894:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
Volume, Treble, Middle, Bass, Presence, Hi Cut, Touch Response (Fast/Gradual)
+
Volume, Treble, Middle, Bass, Presence, Hi Cut, Touch Response switch: Fast/Gradual (not modeled)
  
Fractal Audio:
 
 
# "The Komet is definitely a unique amp. Sort of like a Fender preamp into a Marshall power amp. Unique tone stack." [https://forum.fractalaudio.com/threads/new-amps-in-10-06.70362/#post-863547 source]
 
# "The Komet is definitely a unique amp. Sort of like a Fender preamp into a Marshall power amp. Unique tone stack." [https://forum.fractalaudio.com/threads/new-amps-in-10-06.70362/#post-863547 source]
  
Line 962: Line 907:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
Volume, Treble, Middle, Bass, Presence, Hi Cut, Touch Response (Fast/Gradual)
+
Volume, Treble, Middle, Bass, Presence, Hi Cut, Touch Response switch: Fast/Gradual (not modeled)
  
Fractal Audio:
 
 
# "The Komet is definitely a unique amp. Sort of like a Fender preamp into a Marshall power amp. Unique tone stack." [https://forum.fractalaudio.com/threads/new-amps-in-10-06.70362/#post-863547 source]
 
# "The Komet is definitely a unique amp. Sort of like a Fender preamp into a Marshall power amp. Unique tone stack." [https://forum.fractalaudio.com/threads/new-amps-in-10-06.70362/#post-863547 source]
  
Line 975: Line 919:
 
[[file:cornford.png|300px]]
 
[[file:cornford.png|300px]]
  
This model was named "Corncob" in the Axe-Fx II
+
Formerly: CORNCOB
  
 
Model:
 
Model:
# Overdrive channel
+
* Overdrive channel
  
 
[[Cabinet models list |Cab:]] Cornford 4x12 (V30)
 
[[Cabinet models list |Cab:]] Cornford 4x12 (V30)
Line 990: Line 934:
 
[[File:vh4.jpg|300px]]
 
[[File:vh4.jpg|300px]]
  
Notes: see Dizzy
+
Notes: see Dizzy V4
  
 
==DELUXE TWEED (based on Fender Tweed Deluxe, 5E3)==
 
==DELUXE TWEED (based on Fender Tweed Deluxe, 5E3)==
Line 996: Line 940:
 
[[file:deluxe.jpg|300px]]
 
[[file:deluxe.jpg|300px]]
  
Model:
+
Models:
# single channel
+
* Bright input
 +
* Bright and Normal inputs jumpered
  
 
[[Cabinet models list |Cab:]] Fender 1x12 (P12R, C12N, Alnico)
 
[[Cabinet models list |Cab:]] Fender 1x12 (P12R, C12N, Alnico)
  
Volume Normal, Volume Bright, Tone (Axe-Fx II/AX8: Treble)
+
Volume Normal, Volume Bright, Tone
  
Fractal Audio:
 
 
# "Deluxe Tweed” amp model based on a Fender 5E3 Deluxe. Note that this amp only has a single tone control. This is modeled by the Treble control in the Axe-Fx II. The Bass and Mid controls are functional and recreate the amp when set to noon. Also note that this amp suffers from extreme blocking distortion at or near maximum gain. This is common in very old designs. As it is virtually unplayable like this, the model uses a somewhat reduced level of grid conduction to lower the amount of blocking distortion and make the amp more playable at high Drive settings."
 
# "Deluxe Tweed” amp model based on a Fender 5E3 Deluxe. Note that this amp only has a single tone control. This is modeled by the Treble control in the Axe-Fx II. The Bass and Mid controls are functional and recreate the amp when set to noon. Also note that this amp suffers from extreme blocking distortion at or near maximum gain. This is common in very old designs. As it is virtually unplayable like this, the model uses a somewhat reduced level of grid conduction to lower the amount of blocking distortion and make the amp more playable at high Drive settings."
 
# "The G3 version of the 5E3 Deluxe Tweed model is a hoot. Totally unpredictable, nasty, gnarly and raunchy. I couldn't stop playing it yesterday. Just like the real amp you have to be careful with your volume control and how you approach the amp so that you keep it right on the edge of playability. So cool." [https://forum.fractalaudio.com/posts/1144722/ source]
 
# "The G3 version of the 5E3 Deluxe Tweed model is a hoot. Totally unpredictable, nasty, gnarly and raunchy. I couldn't stop playing it yesterday. Just like the real amp you have to be careful with your volume control and how you approach the amp so that you keep it right on the edge of playability. So cool." [https://forum.fractalaudio.com/posts/1144722/ source]
Line 1,012: Line 956:
 
# (about fuzzy lows) "That's what those amps do. Always been that way. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. Those are old designs. Simple circuits with minimal frequency shaping. As such there's a lot of bass going into the power amp. That coupled with the resonance magnification of the speaker impedance causes frequencies around the resonance (in the 50-100 Hz region) to distort early. The low E string is 82 Hz so it's right in that zone." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1842156 source]
 
# (about fuzzy lows) "That's what those amps do. Always been that way. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. Those are old designs. Simple circuits with minimal frequency shaping. As such there's a lot of bass going into the power amp. That coupled with the resonance magnification of the speaker impedance causes frequencies around the resonance (in the 50-100 Hz region) to distort early. The low E string is 82 Hz so it's right in that zone." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1842156 source]
 
# "When you dime the controls and whack a big chord the sound "goes away" a bit just like the real amp and then comes back a bit later." [https://forum.fractalaudio.com/threads/you-guys-gals-are-in-for-another-treat.169535/post-2042185 source]
 
# "When you dime the controls and whack a big chord the sound "goes away" a bit just like the real amp and then comes back a bit later." [https://forum.fractalaudio.com/threads/you-guys-gals-are-in-for-another-treat.169535/post-2042185 source]
# (Cygnus) "The 5E3 model is now "jumped" by default so it has both Normal and Bright drives. You can get all sorts of different distortion textures by playing with the two drives in conjunction with the tone control. As with the real amp everything now interacts. One of the beta testers was remarking that his 5E3 clone sounded more "choked" in comparison to the model. I said "I bet your clone has the wrong type of tube in V1. It's supposed to be a 12AY7 but many clones have a 12AX7A in V1." He checked and, sure enough, 12AX7A in V1." [https://forum.fractalaudio.com/threads/cygnus-beta-first-impressions.169942/post-2045461 source]
+
# ("Cygnus" amp modeling) "The 5E3 model is now "jumped" so it has both Normal and Bright drives. You can get all sorts of different distortion textures by playing with the two drives in conjunction with the tone control. As with the real amp everything now interacts. One of the beta testers was remarking that his 5E3 clone sounded more "choked" in comparison to the model. I said "I bet your clone has the wrong type of tube in V1. It's supposed to be a 12AY7 but many clones have a 12AX7A in V1." He checked and, sure enough, 12AX7A in V1." [https://forum.fractalaudio.com/threads/cygnus-beta-first-impressions.169942/post-2045461 source]
+
# ("Cygnus" amp modeling) "I've added a non-jumped version of the 5E3 with both volume knobs. Now we can wait for the inevitable "When I turn the Bright Drive all the way down the Normal Drive doesn't do anything" comments." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2051108 source]
 +
 
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-deluxe-tweed-fender-deluxe-5e3.113007/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-deluxe-tweed-fender-deluxe-5e3.113007/ Yek's write-up]
  
==DELUXE TWEED ...==
+
==DELUXE TWEED JUMPED==
  
==DELUXE VERB NORMAL (based on Fender blackface Deluxe Reverb, AB763)==
+
==DELUXE VERB NORMAL (based on blackface Fender Deluxe Reverb, AB763)==
  
 
[[file:deluxereverb.jpg|300px]]
 
[[file:deluxereverb.jpg|300px]]
  
 
Models:
 
Models:
# Normal channel
+
* Normal channel
# Vibrato channel
+
* Vibrato channel
  
 
[[Cabinet models list |Cab:]] Fender 1x12 or 2x10 (C12Q, EVM 12L, JBL D120, 2x10, C10N, C10Q, P10R)
 
[[Cabinet models list |Cab:]] Fender 1x12 or 2x10 (C12Q, EVM 12L, JBL D120, 2x10, C10N, C10Q, P10R)
  
Volume, Bass, Treble, Reverb, Vibrato
+
Volume, Bass, Treble, Reverb, Vibrato (not modeled)
  
Fractal Audio:
 
 
# "A DR is numbered 1-10 so 3 on a DR is around 2.2 on the Axe-Fx. The model is based on the Vibrato input #1 which has more gain than the normal input. To simulate plugging into the #2 jack (which has half the gain) set Input Trim to 0.5." [https://forum.fractalaudio.com/posts/1260148/ source]
 
# "A DR is numbered 1-10 so 3 on a DR is around 2.2 on the Axe-Fx. The model is based on the Vibrato input #1 which has more gain than the normal input. To simulate plugging into the #2 jack (which has half the gain) set Input Trim to 0.5." [https://forum.fractalaudio.com/posts/1260148/ source]
 
# "We got our reference Deluxe Reverb out of storage today, hooked it up and measured and compared. Gain measures spot-on and A/B testing sounds identical. With a Suhr Modern guitar with stock pickups both the amp and the model were starting to break up around 3 (which equals 2.2 on the Axe-Fx since the knobs start at zero not one). A Deluxe Reverb breaks up easily since it has 6V6 power tubes. The preamp is virtually identical to a Twin Reverb but 6V6s break up earlier than 6L6s. For a given voltage into the power amp a 6V6 has about 70% of the headroom compared to a 6L6." [https://forum.fractalaudio.com/posts/1262483/ source]
 
# "We got our reference Deluxe Reverb out of storage today, hooked it up and measured and compared. Gain measures spot-on and A/B testing sounds identical. With a Suhr Modern guitar with stock pickups both the amp and the model were starting to break up around 3 (which equals 2.2 on the Axe-Fx since the knobs start at zero not one). A Deluxe Reverb breaks up easily since it has 6V6 power tubes. The preamp is virtually identical to a Twin Reverb but 6V6s break up earlier than 6L6s. For a given voltage into the power amp a 6V6 has about 70% of the headroom compared to a 6L6." [https://forum.fractalaudio.com/posts/1262483/ source]
 
# "The values for the Deluxe Reverb model are based on measurements of an actual 65 Deluxe Reverb, not some hypothetical values on some spec sheet." [http://forum.fractalaudio.com/threads/speaker-page-does-any-of-this-make-sense.110373/#post-1322466 source]
 
# "The values for the Deluxe Reverb model are based on measurements of an actual 65 Deluxe Reverb, not some hypothetical values on some spec sheet." [http://forum.fractalaudio.com/threads/speaker-page-does-any-of-this-make-sense.110373/#post-1322466 source]
# (about fuzzy lows) "That's what those amps do. Always been that way. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. Those are old designs. Simple circuits with minimal frequency shaping. As such there's a lot of bass going into the power amp. That coupled with the resonance magnification of the speaker impedance causes frequencies around the resonance (in the 50-100 Hz region) to distort early. The low E string is 82 Hz so it's right in that zone." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1842156 source]
+
# (fuzzy lows) "That's what those amps do. Always been that way. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. Those are old designs. Simple circuits with minimal frequency shaping. As such there's a lot of bass going into the power amp. That coupled with the resonance magnification of the speaker impedance causes frequencies around the resonance (in the 50-100 Hz region) to distort early. The low E string is 82 Hz so it's right in that zone." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1842156 source]
 
# "We have two Deluxe Reverbs, a vintage 1965 Deluxe Reverb that the model is based on and a Reissue. The vintage one sounds great, the reissue doesn't quite sound as good. It's biased too cold. The comparison was between the model and the Reissue because the vintage amp is worth a small fortune and I only use that when actually working on models. It stays in climate controlled storage otherwise." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1842188 source]
 
# "We have two Deluxe Reverbs, a vintage 1965 Deluxe Reverb that the model is based on and a Reissue. The vintage one sounds great, the reissue doesn't quite sound as good. It's biased too cold. The comparison was between the model and the Reissue because the vintage amp is worth a small fortune and I only use that when actually working on models. It stays in climate controlled storage otherwise." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1842188 source]
  
Line 1,046: Line 990:
  
 
Models:
 
Models:
# current version of the original amp
+
* Current version of the amp
# earlier version of the original amp with some different component values, a little more aggressive than the regular model
+
* Earlier version of the amp with different component values, a little more aggressive than the regular model
  
 
[[Cabinet models list |Cab:]] Friedman 4x12 (V30, G12M, G12-65, G12H)
 
[[Cabinet models list |Cab:]] Friedman 4x12 (V30, G12M, G12-65, G12H)
Line 1,053: Line 997:
 
Gain, Master, Bass, Middle, Treble, Presence
 
Gain, Master, Bass, Middle, Treble, Presence
  
Fractal Audio:
 
 
# "If you want more clarity in the low mids (...) reduce Negative Feedback. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. (...) The amp will sound tighter and clearer in the low mids." [http://forum.fractalaudio.com/threads/underrated-amp-models.109894/page-2#post-1316362 source]
 
# "If you want more clarity in the low mids (...) reduce Negative Feedback. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. (...) The amp will sound tighter and clearer in the low mids." [http://forum.fractalaudio.com/threads/underrated-amp-models.109894/page-2#post-1316362 source]
 
# "The design is weird as the negative feedback is taken off the speaker jack. So if you use a 16-ohm speaker you get more feedback (and much more bass) than if you use an 8-ohm speaker. (...) It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit." [http://forum.fractalaudio.com/threads/question-about-the-friedman-amp-presets.110511/#post-1322655 source]
 
# "The design is weird as the negative feedback is taken off the speaker jack. So if you use a 16-ohm speaker you get more feedback (and much more bass) than if you use an 8-ohm speaker. (...) It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit." [http://forum.fractalaudio.com/threads/question-about-the-friedman-amp-presets.110511/#post-1322655 source]
Line 1,059: Line 1,002:
 
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
 
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
 
# "I always lower the negative feedback. Friedman amps are a bit strange because the negative feedback is taken off the speaker jack instead of one of the transformer taps. The matching cabs are 16 ohms but if you use an 8-ohm cab you'll get 30% less feedback." [http://forum.fractalaudio.com/threads/couple-of-observations-about-the-friedmans-in-7-02.126030/page-2#post-1504343 source]
 
# "I always lower the negative feedback. Friedman amps are a bit strange because the negative feedback is taken off the speaker jack instead of one of the transformer taps. The matching cabs are 16 ohms but if you use an 8-ohm cab you'll get 30% less feedback." [http://forum.fractalaudio.com/threads/couple-of-observations-about-the-friedmans-in-7-02.126030/page-2#post-1504343 source]
# (Cygnus) "Dirty Shirley 1 is actually the latest version of the amp." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2048948 source]
+
# ("Cygnus" amp modeling) "Dirty Shirley 1 is actually the latest version of the amp." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2048948 source]
# "They are very dark amp when used with the matching 16-ohm cabinet. The feedback is off the speaker jack (don't ask me why, doesn't make sense). This results in a lot of negative feedback at high frequencies which makes the sound dark. The amp is modeled assuming a 16-ohm load. If you use them into an 8-ohm cabinet they're brighter. To simulate this lower the negative feedback by 1/sqrt(2). This results in a negative feedback value of 0.3." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2052720 source]
+
# "They are very dark amp when used with the matching 16-ohm cabinet. The feedback is off the speaker jack (don't ask me why, doesn't make sense). This results in a lot of negative feedback at high frequencies which makes the sound dark. The amp is modeled assuming a 16-ohm load. If you use them into an 8-ohm cabinet they're brighter. To simulate this lower the negative feedback by 1/sqrt(2). This results in a negative feedback value of 3." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2052720 source]
 
# "Dirty Shirley 2 is the brighter of the two (has a 2.2nF cathode cap instead of 4.7nF)." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2052814 source]
 
# "Dirty Shirley 2 is the brighter of the two (has a 2.2nF cathode cap instead of 4.7nF)." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2052814 source]
  
Line 1,074: Line 1,017:
  
 
Models:
 
Models:
# non-boosted (volume knob pushed in)
+
* Boost OFF (Volume knob pushed in)
# boosted (volume knob pulled out)
+
* Boost ON (Volume knob pulled out)
  
 
[[Cabinet models list |Cab:]] Divided by 13 (G12M)
 
[[Cabinet models list |Cab:]] Divided by 13 (G12M)
Line 1,081: Line 1,024:
 
Volume (pull: Boost), Treble, Bass, Master
 
Volume (pull: Boost), Treble, Bass, Master
  
Fractal Audio:
 
 
# "It is a bassy amp. Works best with single coils." [http://forum.fractalaudio.com/threads/13-goodness-st-michael-blues.56060/#post-706664 source]
 
# "It is a bassy amp. Works best with single coils." [http://forum.fractalaudio.com/threads/13-goodness-st-michael-blues.56060/#post-706664 source]
 
# "You increase the LOW CUT FREQ to reduce the fuzziness on bass notes but then it won't sound like the real thing." [https://forum.fractalaudio.com/posts/724268/ source]
 
# "You increase the LOW CUT FREQ to reduce the fuzziness on bass notes but then it won't sound like the real thing." [https://forum.fractalaudio.com/posts/724268/ source]
Line 1,094: Line 1,036:
  
 
Models:
 
Models:
# Low: channel 1 with Mid Gain Boost off
+
* Low: channel 1, Mid Gain Boost OFF
# High: channel 1 with Mid Gain Boost on
+
* High: channel 1, Mid Gain Boost ON
  
 
[[Cabinet models list |Cab:]] Divided by 13 (G12H and Alnico)
 
[[Cabinet models list |Cab:]] Divided by 13 (G12H and Alnico)
Line 1,110: Line 1,052:
  
 
Models:
 
Models:
# Blue faceplate, channel 2 Crunch
+
* Blue faceplate, channel 2 Crunch
# Blue faceplate, channel 3 Mega
+
* Blue faceplate, channel 3 Mega
# Blue faceplate, channel 4 Lead
+
* Blue faceplate, channel 4 Lead
# Silver faceplate, channel 2 Crunch
+
* Silver faceplate, channel 2 Crunch  
# Silver faceplate, channel 3 Mega
+
* Silver faceplate, channel 3 Mega  
# Silver faceplate, channel 4 Lead
+
* Silver faceplate, channel 4 Lead
  
 
[[Cabinet models list |Cab:]] Diezel 4x12 (V30, G12-100)
 
[[Cabinet models list |Cab:]] Diezel 4x12 (V30, G12-100)
Line 1,121: Line 1,063:
 
Gain, Volume, Bass, Mid, Treble, Presence (4kHz), Deep (80Hz), Bright switch (not on channels 3 and 4)
 
Gain, Volume, Bass, Mid, Treble, Presence (4kHz), Deep (80Hz), Bright switch (not on channels 3 and 4)
  
Fractal Audio:
 
 
# "The reason Diezels compress so much is due to the cathode follower design. You can reduce the compression in the models by lowering the Compression parameter in the Cathode Follower section." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-00.165157/post-1981183 source]
 
# "The reason Diezels compress so much is due to the cathode follower design. You can reduce the compression in the models by lowering the Compression parameter in the Cathode Follower section." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-00.165157/post-1981183 source]
  
Line 1,138: Line 1,079:
 
==DIZZY V4 SILVER 4==
 
==DIZZY V4 SILVER 4==
  
==DOUBLE VERB NORMAL (based on '66 Fender blackface Twin Reverb)==
+
==DOUBLE VERB NORMAL (based on 1966 blackface Fender Twin Reverb)==
  
 
[[file:twin.jpg|300px]]
 
[[file:twin.jpg|300px]]
  
 
Models:
 
Models:
# Normal: based on '66 blackface Fender Twin Reverb, tuned by Andy Fuchs, AB763 circuit, Normal channel
+
* Normal: based on 1966 blackface Fender Twin Reverb, tuned by Andy Fuchs, AB763 circuit, Normal channel
# Vibrato: based on the Vibrato channel of the same amp
+
* Vibrato: based on the Vibrato channel of the same amp
# Silverface: based on the Vibrato channel of a 1971 100 watts “Silverface”
+
* Silverface: based on the Vibrato channel of a 1971 100 watts “Silverface”
  
 
[[Cabinet models list |Cab:]] Fender 2x12 (Jensen C12N, JBL D120, EVM)
 
[[Cabinet models list |Cab:]] Fender 2x12 (Jensen C12N, JBL D120, EVM)
  
Volume, Bass, Middle, Treble, Bright switch, Reverb, Vibrato
+
Volume, Bass, Middle, Treble, Bright switch, Reverb (not modeled), Vibrato (not modeled)
  
Fractal Audio:
+
# (make the Twin cleaner) "Reduce MV (or MV Trim). The biggest reason Silverface Twins were cleaner is because the PI had less gain. Reducing the MV or MV Trim will simulate the lower gain." [https://forum.fractalaudio.com/posts/910015/ source]
# To make the Twin cleaner: "Reduce MV (or MV Trim). The biggest reason Silverface Twins were cleaner is because the PI had less gain. Reducing the MV or MV Trim will simulate the lower gain." [https://forum.fractalaudio.com/posts/910015/ source]
+
# (original Double Verb model) "The Twin Reverb that the model is based on breaks up like that. The model is MIMIC'd and is extremely accurate. It's a Blackface Twin which breaks up easy compared to later Twins. Furthermore, as with all models, it is modeled on the "Hi" input. If you don't want it to break up as easy turn Input Trim to 0.5 to simulate using the "Low" input, reduce Input Drive and MV as necessary. You may want to turn the Bright Switch off as well. People who want squeaky clean usually turn the Bright Switch off on these amps. However, you'd be surprised that a Twin isn't nearly as clean as you think. It's just so damn loud that you get the sensation that it's clean because a light touch on the strings creates a lot of volume." [https://forum.fractalaudio.com/posts/968763/ source]
# (about the original Double Verb model) "The Twin Reverb that the model is based on breaks up like that. The model is MIMIC'd and is extremely accurate. It's a Blackface Twin which breaks up easy compared to later Twins. Furthermore, as with all models, it is modeled on the "Hi" input. If you don't want it to break up as easy turn Input Trim to 0.5 to simulate using the "Low" input, reduce Input Drive and MV as necessary. You may want to turn the Bright Switch off as well. People who want squeaky clean usually turn the Bright Switch off on these amps. However, you'd be surprised that a Twin isn't nearly as clean as you think. It's just so damn loud that you get the sensation that it's clean because a light touch on the strings creates a lot of volume." [https://forum.fractalaudio.com/posts/968763/ source]
 
 
# "The model is extremely accurate and is based on a 1966 Blackface Twin Reverb. Part of the reason the Blackface era are so sought after is because they distort. They are NOT clean amps by any stretch." [http://forum.fractalaudio.com/threads/twin-issue.119594/#post-1422765 source]
 
# "The model is extremely accurate and is based on a 1966 Blackface Twin Reverb. Part of the reason the Blackface era are so sought after is because they distort. They are NOT clean amps by any stretch." [http://forum.fractalaudio.com/threads/twin-issue.119594/#post-1422765 source]
# "A Dual Showman with the AB763 circuit has one less gain stage than a Twin Reverb so it will have less gain. There are two gain stages. The Vibrato channel of an AB763 Twin Reverb has three gain stages. An AA769 Dual Showman Reverb on the Vibrato channel will have similar gain as it has three gain stages. The circuit number, i.e. AB763, does not mean that the circuits are identical. It refers to the circa of the design. An AB763 Dual Showman is not the same circuit as an AB763 Twin Reverb." [http://forum.fractalaudio.com/threads/twin-issue.119594/page-2#post-1423069 source]  
+
# "A Dual Showman with the AB763 circuit has one less gain stage than a Twin Reverb so it will have less gain. There are two gain stages. The Vibrato channel of an AB763 Twin Reverb has three gain stages. An AA769 Dual Showman Reverb on the Vibrato channel will have similar gain as it has three gain stages. The circuit number, i.e. AB763, does not mean that the circuits are identical. It refers to the circa of the design. An AB763 Dual Showman is not the same circuit as an AB763 Twin Reverb." [http://forum.fractalaudio.com/threads/twin-issue.119594/page-2#post-1423069 source]
 +
# "The Super Reverb is really just a 50W version of a Twin Reverb with different speakers." [https://forum.fractalaudio.com/threads/wanted-amps-to-model.56753/page-4#post-713267 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-double-verb-fender-twin-reverb.113177 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-double-verb-fender-twin-reverb.113177 Yek's write-up]
  
==DOUBLE VERB SILVERFACE (based on '71 Fender silverface Twin Reverb)==
+
==DOUBLE VERB SILVERFACE (based on 1971 silverface Fender Twin Reverb)==
  
==DOUBLE VERB  VIBRATO (based on '66 Fender blackface Twin Reverb)==
+
==DOUBLE VERB  VIBRATO (based on 1966 blackface Fender Twin Reverb)==
  
==DWEEZIL'S BASSGUY (based on Dweezil Zappa's modded '65 blackface Fender Bassman, AB165)==
+
==DWEEZIL'S BASSGUY (based on Dweezil Zappa's 1965 blackface Fender Bassman, AB165)==
  
 
[[file:ab165.png|300px]]
 
[[file:ab165.png|300px]]
  
 
Model:
 
Model:
# Bass channel, modded by Blankenship
+
* Bass channel modded by Blankenship
  
 
[[Cabinet models list |Cab:]] Fender 2x12 (Oxford)
 
[[Cabinet models list |Cab:]] Fender 2x12 (Oxford)
Line 1,176: Line 1,117:
 
Notes: see 65 Bassguy
 
Notes: see 65 Bassguy
  
Fractal Audio:
 
 
# "It's Dweezil's Blankenship modified Bassman. Dweezil's Bassman has two channels like a regular Bassman. The Normal channel is "normal" and corresponds to the 65 Bassguy Nrml model. The Bass Instrument channel is modified and that's the basis for the new model (Dweezil's B-man). It has a boatload of gain and sounds more like a Plexi than a Fender." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-3-00-public-beta.113410/page-5#post-1356686 source]
 
# "It's Dweezil's Blankenship modified Bassman. Dweezil's Bassman has two channels like a regular Bassman. The Normal channel is "normal" and corresponds to the 65 Bassguy Nrml model. The Bass Instrument channel is modified and that's the basis for the new model (Dweezil's B-man). It has a boatload of gain and sounds more like a Plexi than a Fender." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-3-00-public-beta.113410/page-5#post-1356686 source]
 
# "Just finished matching this modded 65 Bassman that Dweezil sent me. It's a crazy sounding amp, sounds nothing like your typical Fender. It was modded by Roy Blankenship." [https://forum.fractalaudio.com/threads/another-v10-preview.62489/ source]
 
# "Just finished matching this modded 65 Bassman that Dweezil sent me. It's a crazy sounding amp, sounds nothing like your typical Fender. It was modded by Roy Blankenship." [https://forum.fractalaudio.com/threads/another-v10-preview.62489/ source]
Line 1,189: Line 1,129:
  
 
Model:
 
Model:
# Lead channel
+
* Lead channel
  
 
[[Cabinet models list |Cab:]] Engl 4x12 (V30, V60)
 
[[Cabinet models list |Cab:]] Engl 4x12 (V30, V60)
Line 1,202: Line 1,142:
  
 
Models:
 
Models:
# Blue channel, structure: Vintage
+
* Blue channel, structure switch: Vintage
# Blue channel, structure: Modern  
+
* Blue channel, structure switch: Modern  
# Red channel, structure: Vintage
+
* Red channel, structure switch: Vintage
# Red channel, structure: Modern
+
* Red channel, structure switch: Modern
  
 
[[Cabinet models list |Cab:]] Bogner 2x12 or 4x12 (V30)
 
[[Cabinet models list |Cab:]] Bogner 2x12 or 4x12 (V30)
  
Gain, Master, Bass, Middle, Treble, Presence, Bright switch, Structure switch (gain reduction), Old/New Style switch, Excursion switch, Gain switch, Plexi Mode
+
Gain, Master, Bass, Middle, Treble, Presence, Bright switch, Structure switch (gain reduction), Old/New Style switch (not modeled), Excursion switch, Gain switch, Plexi Mode (not modeled)
  
Fractal Audio:
 
 
# "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." [https://forum.fractalaudio.com/posts/1031334/ source]
 
# "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." [https://forum.fractalaudio.com/posts/1031334/ source]
 
# "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." [https://forum.fractalaudio.com/posts/1047275/ source]
 
# "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." [https://forum.fractalaudio.com/posts/1047275/ source]
Line 1,217: Line 1,156:
 
# (Class A) "Turn up Power Tube Grid Bias. In real life that is tough on tubes as it makes them run very hot." [https://forum.fractalaudio.com/threads/replicating-the-bogner-ecstasy-class-a-mode.145294/#post-1718463 source]
 
# (Class A) "Turn up Power Tube Grid Bias. In real life that is tough on tubes as it makes them run very hot." [https://forum.fractalaudio.com/threads/replicating-the-bogner-ecstasy-class-a-mode.145294/#post-1718463 source]
 
# "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." [https://forum.fractalaudio.com/threads/fast-pick-attack-amp.170370/post-2049711 source]
 
# "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." [https://forum.fractalaudio.com/threads/fast-pick-attack-amp.170370/post-2049711 source]
 +
# "Most amps use a linear taper for the treble pot. Bogners use a log taper. So when the knob is at noon on a Bogner it's similar to 8 o'clock on most amps." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-11-cygnus-firmware-public-beta-8.171486/post-2067364 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-euro-bogner-ecstasy.113278/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-euro-bogner-ecstasy.113278/ Yek's write-up]
Line 1,231: Line 1,171:
  
 
Model:
 
Model:
# High gain channel
+
* High gain channel
  
 
[[Cabinet models list | Cab:]] Bogner 4x12 Uberkab (G12-T75 and V30)
 
[[Cabinet models list | Cab:]] Bogner 4x12 Uberkab (G12-T75 and V30)
  
Gain, Master, Bass, Middle, Treble, Presence, Depth
+
Gain, Master, Bass, Middle, Treble, Presence, Depth (only on Twin-Jet Uberschall)
  
Fractal Audio:
 
 
# "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." [https://forum.fractalaudio.com/posts/1031334/ source]
 
# "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." [https://forum.fractalaudio.com/posts/1031334/ source]
 
# "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." [https://forum.fractalaudio.com/posts/1047275/ source]
 
# "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." [https://forum.fractalaudio.com/posts/1047275/ source]
 
# "The feedback circuit is responsible for the behavior of the Presence and Depth controls. Certain Bogners and Diezels have a unique type of feedback circuit. There are no new parameters and nothing to do except twist the Presence and Depth knobs to your desired tone. Note that an Uberschall doesn't have a Depth knob. The default Depth value when you select the Euro Uber model is equivalent to the amp's fixed depth circuit." [https://forum.fractalaudio.com/posts/1159760/ source]
 
# "The feedback circuit is responsible for the behavior of the Presence and Depth controls. Certain Bogners and Diezels have a unique type of feedback circuit. There are no new parameters and nothing to do except twist the Presence and Depth knobs to your desired tone. Note that an Uberschall doesn't have a Depth knob. The default Depth value when you select the Euro Uber model is equivalent to the amp's fixed depth circuit." [https://forum.fractalaudio.com/posts/1159760/ source]
 
# "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." [https://forum.fractalaudio.com/threads/fast-pick-attack-amp.170370/post-2049711 source]
 
# "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." [https://forum.fractalaudio.com/threads/fast-pick-attack-amp.170370/post-2049711 source]
 +
# "Most amps use a linear taper for the treble pot. Bogners use a log taper. So when the knob is at noon on a Bogner it's similar to 8 o'clock on most amps." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-11-cygnus-firmware-public-beta-8.171486/post-2067364 source]
  
 
[https://forum.fractalaudio.com/threads/new-18-00-public-beta.96570/page-13#post-1159760 Yek's write-up]
 
[https://forum.fractalaudio.com/threads/new-18-00-public-beta.96570/page-13#post-1159760 Yek's write-up]
  
==FAS 6160 (custom "5150" model)==
+
==FAS 6160 (custom model)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "Based on the PVH 6160 model but more open and less fizzy than the original amp. Also, a virtual choke has replaced the resistor found on the original’s power supply filter. This results in a bouncier feel."
 
# "Based on the PVH 6160 model but more open and less fizzy than the original amp. Also, a virtual choke has replaced the resistor found on the original’s power supply filter. This results in a bouncier feel."
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
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[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
  
==FAS BASS (custom bass model)==
+
==FAS BASS (custom model)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
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[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "This amp was an accident. I was working on the Savage model and accidentally used the input stage from an SLO100. So it's the front end of an SLO100 with the back end of a Savage. It's probably an SLO100 power amp too but I'd have to check." [https://forum.fractalaudio.com/posts/1020502/ source]
 
# "This amp was an accident. I was working on the Savage model and accidentally used the input stage from an SLO100. So it's the front end of an SLO100 with the back end of a Savage. It's probably an SLO100 power amp too but I'd have to check." [https://forum.fractalaudio.com/posts/1020502/ source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
 
# "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944071 source]
 
# "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944071 source]
 +
# "Brootalz uses the Engl Savage presence network which reduces negative feedback as the control is turned down causing an increase in volume." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-5-cygnus-firmware-public-beta-2.170901/post-2059273 source]
  
 
[https://forum.fractalaudio.com/posts/1020502/ Yek's write-up]
 
[https://forum.fractalaudio.com/posts/1020502/ Yek's write-up]
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[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
+
 
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
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[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-brown-and-fas-brown.111974/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-brown-and-fas-brown.111974/ Yek's write-up]
  
==FAS CLASS-A (custom "Class-A" model)==
+
==FAS CLASS-A (custom model)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "A “Blackface” preamp into a cathode-biased 6L6 power amp with no negative feedback. This was a happy accident when originally modeling the Carr Rambler in the beta version of this release. Several mistakes were made in the model prior to MIMIC’ing the amp but the model was so well liked that we decided to make it into its own custom amp model."
 
# "A “Blackface” preamp into a cathode-biased 6L6 power amp with no negative feedback. This was a happy accident when originally modeling the Carr Rambler in the beta version of this release. Several mistakes were made in the model prior to MIMIC’ing the amp but the model was so well liked that we decided to make it into its own custom amp model."
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
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[https://forum.fractalaudio.com/posts/1355719/ Yek's write-up]
 
[https://forum.fractalaudio.com/posts/1355719/ Yek's write-up]
  
==FAS CRUNCH (custom "Plexi" model)==
+
==FAS CRUNCH (custom model, based on Marshall Plexi)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "Our take on the ultimate British-sounding amp. More dynamic and open than a Plexi, but with more gain."
 
# "Our take on the ultimate British-sounding amp. More dynamic and open than a Plexi, but with more gain."
 
# "My take on the ultimate Plexi." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-9-public-beta.59414/page-22#post-744829 source]
 
# "My take on the ultimate Plexi." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-9-public-beta.59414/page-22#post-744829 source]
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[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
  
==FAS EXPRESS (custom Trainwreck Express model)==
+
==FAS EXPRESS (custom model, based on Trainwreck Express)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model (firmware Ares 12 and later)
+
 
 +
Notes: see Wrecker Express
  
Fractal Audio:
 
 
# "Based on hypothetical modifications to a Trainwreck Express."
 
# "Based on hypothetical modifications to a Trainwreck Express."
# "It has a master volume. That's one of the "mods". [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-11-02-public-beta-5-beta_4.157025/post-1875792 source]
+
# "It has a master volume. That's one of the "mods"." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-11-02-public-beta-5-beta_4.157025/post-1875792 source]
  
==FAS HOT ROD (custom "modded Marshall" model)==
+
==FAS HOT ROD (custom model, based on hot-rodded Marshall)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "FAS Hot Rod is my version of what a modded Marshall should be. I find the BE/HBE a little too boomy and scooped. Bogners are too dark. Splawns don't have enough compression. Etc. So it's my take on a hot-rodded Marshall tone." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-1-02-firmware-release.106477/page-4#post-1274103 source]
 
# "FAS Hot Rod is my version of what a modded Marshall should be. I find the BE/HBE a little too boomy and scooped. Bogners are too dark. Splawns don't have enough compression. Etc. So it's my take on a hot-rodded Marshall tone." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-1-02-firmware-release.106477/page-4#post-1274103 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
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[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
+
 
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
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[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
+
 
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
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[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
  
==FAS MODERN (custom "metal" model)==
+
==FAS MODERN (custom model)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "This model is my interpretation of the ideal modern metal tone. In the digital realm we are not constrained by the limitations that face tube amp designers so we are free to implement designs that would be nearly impossible with a tube amp. The Axe-Fx II modeling includes a variety of general purpose filters that I can place anywhere in the signal path. So I put some second-order filters in there to tighten up the tone. Implementing second-order filters in a real tube amp is difficult and costly so is rarely seen." [https://forum.fractalaudio.com/posts/715029/ source]
 
# "This model is my interpretation of the ideal modern metal tone. In the digital realm we are not constrained by the limitations that face tube amp designers so we are free to implement designs that would be nearly impossible with a tube amp. The Axe-Fx II modeling includes a variety of general purpose filters that I can place anywhere in the signal path. So I put some second-order filters in there to tighten up the tone. Implementing second-order filters in a real tube amp is difficult and costly so is rarely seen." [https://forum.fractalaudio.com/posts/715029/ source]
 
# "It's loosely based on a Recto but with tighter bass." [https://forum.fractalaudio.com/threads/fw-6-0-rectifier-obsevation.51197/#post-658849 source]
 
# "It's loosely based on a Recto but with tighter bass." [https://forum.fractalaudio.com/threads/fw-6-0-rectifier-obsevation.51197/#post-658849 source]
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[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "This is a tighter version of the popular FAS Modern model with a 5150-style bass boost in the tone stack."
 
# "This is a tighter version of the popular FAS Modern model with a 5150-style bass boost in the tone stack."
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
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[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
+
 
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
 
# "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944014 source]
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[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
  
==FAS RHYTHM (custom "Marshall+Mesa" model)==
+
==FAS RHYTHM (custom model: Marshall+Mesa)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "Combines the best features of the British (Marshall) and USA (Mesa) crunch models."
 
# "Combines the best features of the British (Marshall) and USA (Mesa) crunch models."
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
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[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-fas-models.113360/ Yek's write-up]
  
==FAS SKULL CRUSHER (custom "high gain" model)==
+
==FAS SKULL CRUSHER (custom model)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
Fractal Audio:
 
 
# "The nastiest, most brutal amp model to ever escape from the seventh circle."
 
# "The nastiest, most brutal amp model to ever escape from the seventh circle."
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
Line 1,454: Line 1,375:
 
# "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944071 source]
 
# "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." [https://forum.fractalaudio.com/threads/fas-class-a-is-even-better-than-the-real-thing.162257/post-1944071 source]
  
==FAS WRECK (custom "Trainwreck" model)==
+
==FAS WRECK (custom model, based on Trainwreck)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
+
 
 +
Notes: see Wrecker Express
  
Fractal Audio:
 
 
# "Based on the original WRECKER 1 model from the Axe-Fx Ultra."
 
# "Based on the original WRECKER 1 model from the Axe-Fx Ultra."
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
 
# "The FAS models are idealized and have some of the "design flaws" removed or reduced." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841528 source]
Line 1,474: Line 1,395:
 
[[file:fuchs.jpg|300px]]
 
[[file:fuchs.jpg|300px]]
  
Model:
+
Models:
# ODS: Deep switch off, PAB on (Pre Amp Bypass)
+
* ODS: Deep switch OFF, Pre Amp Bypass ON (no tone controls)  
# ODS Deep: Deep switch on, PAB off
+
* ODS Deep: Deep switch ON, Pre Amp Bypass ON (no tone controls)
  
 
[[Cabinet models list | Cab:]] Fuchs 2x12 (Eminence)
 
[[Cabinet models list | Cab:]] Fuchs 2x12 (Eminence)
  
Gain, High (pull: mid boost), Mid (pull: gain boost), Low, Input, Brite switch, Deep switch, Rock/Jazz switch, Master, Accent (presence/edge)
+
Gain, High (pull: mid boost), Mid (pull: gain boost), Low, Input, Brite switch, Deep switch, Rock/Jazz switch, Master, Accent (presence/edge, not modeled)
  
Fractal Audio:
 
 
# "Supposedly a Dumble ODS clone but our reference amp has way more gain than our Dumble." [https://forum.fractalaudio.com/posts/1174814/ source]
 
# "Supposedly a Dumble ODS clone but our reference amp has way more gain than our Dumble." [https://forum.fractalaudio.com/posts/1174814/ source]
  
Line 1,489: Line 1,409:
 
==FOX ODS DEEP==
 
==FOX ODS DEEP==
  
==FRIEDMAN BE V1 (based on Friedman BE-100)==
+
==FRIEDMAN BE 2010 (based on Friedman BE, early and recent editions)==
  
 
[[File:BE.jpg|300px]]
 
[[File:BE.jpg|300px]]
  
Models before firmware Cygnus:
+
Models before "Cygnus" amp modeling:
 +
 
 +
* BE: based on old Marsha model, BE mode
 +
* BE C45: based on Mark Day's BE-100, C45 switch engaged
 +
* BE V1: based on Mark Day's BE-100, voice: right position (less mids)
 +
* BE V2: based on Mark Day's BE-100, voice: left position (more mids)
 +
* HBE: based on old Marsha model, HBE mode
 +
* HBE 2018: based on 2018 BE-100, HBE mode
 +
* HBE 2018 C45: based on 2018 BE-100, HBE mode, C45 switch engaged
 +
* HBE V1: based on Mark Day's BE-100, HBE mode, voice: right position (less mids)
 +
* HBE V2: based on Mark Day's BE-100, HBE mode, voice: left position (more mids)
  
# BE: based on old Marsha model, BE mode
+
Models in "Cygnus" amp modeling firmware and later:
# BE C45: based on Mark Day's BE-100, C45 switch engaged
 
# BE V1: based on Mark Day's BE-100, voice: right position (less mids)
 
# BE V2: based on Mark Day's BE-100, voice: left position (more mids)
 
# HBE: based on old Marsha model, HBE mode
 
# HBE 2018: based on 2018 BE-100, HBE mode
 
# HBE 2018 C45: based on 2018 BE-100, HBE mode, C45 switch engaged
 
# HBE V1: based on Mark Day's BE-100, HBE mode, voice: right position (less mids)
 
# HBE V2: based on Mark Day's BE-100, HBE mode, voice: left position (more mids)
 
  
Models in firmware Cygnus, based on a 2018 BE-100 with feedback off the 4-ohm tap:
+
<blockquote>"Based on latest version of amp. There are now three "Voicings": V1, V2 and V3 corresponding to the three positions of the Voice switch."</blockquote>
  
# BE V1: voice in right position (less mids)
+
* BE 2010: based on Friedman BE-100 from 2010 (probably the "Marsha" edition)
# BE V1 C45: voice in right position (less mids), C45 switch engaged
+
* BE C45: recent edition, C45 switch engaged
# BE V2: voice in left position (more mids)
+
* BE V1: recent edition, voice in left position
# BE V2 C45: voice in left position (more mids), C45 switch engaged
+
* BE V1 Fat: recent edition, voice in left position, FAT switch engaged
# HBE V1: HBE mode, voice in right position (less mids)
+
* BE V2: recent edition, voice in middle position (brightest)
# HBE V1 C45: HBE mode, voice in right position (less mids), with C45 switch engaged
+
* BE V3: recent edition, voice in right position
# HBE V1 Fat: HBE mode, voice in right position (less mids), FAT switch engaged
+
* HBE 2010: based on Friedman BE-100 from 2010 (probably the "Marsha" edition), HBE mode
# HBE V2: HBE mode, voice in left position (more mids)
+
* HBE C45: recent edition, C45 switch engaged
# HBE V2 C45: HBE mode, voice in left position (more mids), C45 switch engaged
+
* HBE V1: recent edition, voice in left position
 +
* HBE V1 Fat: recent edition, voice in left position, FAT switch engaged
 +
* HBE V2: recent edition, voice in middle position (brightest)
 +
* HBE V3: recent edition, voice in right position
  
 
[[Cabinet models list | Cab:]] Friedman 4x12 (V30 and/or G12M)
 
[[Cabinet models list | Cab:]] Friedman 4x12 (V30 and/or G12M)
  
Gain, Master, Bass, Middle, Treble, Presence, Bright (clean channel only), plus the Thump control from the Deluxe edition. Switches: FAT, C45 (treble boost), SAT (model: SAT), Voice
+
Gain, Master, Bass, Middle, Treble, Presence, Bright (clean channel only), plus the Thump control on the Deluxe edition. Switches: FAT, C45 (treble boost), SAT (model: SAT), 3-position Voice switch (changes the top-end response of the dirty channels)
  
Fractal Audio:
 
 
# (before Cygnus) "The old model is an original, hand-built "Marsha". It's MUCH darker than Mark's newer BE/HBE. In fact it's so dark and boomy I emailed Dave to make sure the amp was built correctly. Turns out the snubber cap is the wrong value. But even with the snubber cap corrected it's still very dark and boomy which made me question as to whether there are other components that are incorrect. So we decided to redo the model based on Mark's amp which is the amp that was the demo model at Tone Merchants." [http://forum.fractalaudio.com/threads/the-new-hbe.112717/#post-1348497 source]
 
# (before Cygnus) "The old model is an original, hand-built "Marsha". It's MUCH darker than Mark's newer BE/HBE. In fact it's so dark and boomy I emailed Dave to make sure the amp was built correctly. Turns out the snubber cap is the wrong value. But even with the snubber cap corrected it's still very dark and boomy which made me question as to whether there are other components that are incorrect. So we decided to redo the model based on Mark's amp which is the amp that was the demo model at Tone Merchants." [http://forum.fractalaudio.com/threads/the-new-hbe.112717/#post-1348497 source]
 
# (before Cygnus) "The models are based on two different amps. The V1 and V2 are based on Mark Day's BE100. The other models are based on our original "Marsha". Like most boutique amp makers Friedman's designs have evolved over time with changes to the circuit. The original Marsha we have is dark and bassy with lots of lowpass filtering. The newer amp is brighter and tighter. For now note that V1/V2 refer to the newer amp and represent the position of the Voicing switch." [http://forum.fractalaudio.com/threads/which-are-the-new-be-hbe-models.114510/#post-1369754 source]
 
# (before Cygnus) "The models are based on two different amps. The V1 and V2 are based on Mark Day's BE100. The other models are based on our original "Marsha". Like most boutique amp makers Friedman's designs have evolved over time with changes to the circuit. The original Marsha we have is dark and bassy with lots of lowpass filtering. The newer amp is brighter and tighter. For now note that V1/V2 refer to the newer amp and represent the position of the Voicing switch." [http://forum.fractalaudio.com/threads/which-are-the-new-be-hbe-models.114510/#post-1369754 source]
Line 1,528: Line 1,452:
 
# "The design is weird as the negative feedback is taken off the speaker jack. So if you use a 16-ohm speaker you get more feedback (and much more bass) than if you use an 8-ohm speaker. The model is based on using the matching cab. It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit." [http://forum.fractalaudio.com/threads/question-about-the-friedman-amp-presets.110511/#post-1322655 source]
 
# "The design is weird as the negative feedback is taken off the speaker jack. So if you use a 16-ohm speaker you get more feedback (and much more bass) than if you use an 8-ohm speaker. The model is based on using the matching cab. It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit." [http://forum.fractalaudio.com/threads/question-about-the-friedman-amp-presets.110511/#post-1322655 source]
 
# "I always lower the negative feedback. Friedman amps are a bit strange because the negative feedback is taken off the speaker jack instead of one of the transformer taps. The matching cabs are 16 ohms but if you use an 8-ohm cab you'll get 30% less feedback." [http://forum.fractalaudio.com/threads/couple-of-observations-about-the-friedmans-in-7-02.126030/page-2#post-1504343 source]
 
# "I always lower the negative feedback. Friedman amps are a bit strange because the negative feedback is taken off the speaker jack instead of one of the transformer taps. The matching cabs are 16 ohms but if you use an 8-ohm cab you'll get 30% less feedback." [http://forum.fractalaudio.com/threads/couple-of-observations-about-the-friedmans-in-7-02.126030/page-2#post-1504343 source]
# "C45 is a treble boost on the input." [http://forum.fractalaudio.com/threads/friedman-hbe-with-c45-switch.110686/#post-1324975 source]
+
# "C45 is a treble boost on the input. Put a filter block before the amp as follows: Type: Tilt EQ - Freq: 700 Hz - Gain: 4.5 dB" [http://forum.fractalaudio.com/threads/friedman-hbe-with-c45-switch.110686/#post-1324975 source]
 
# [http://forum.fractalaudio.com/threads/friedman-be-100-hbe-channel-vs-the-axe-fx-3-hbe-model.144911 Discussion about the Bass control]
 
# [http://forum.fractalaudio.com/threads/friedman-be-100-hbe-channel-vs-the-axe-fx-3-hbe-model.144911 Discussion about the Bass control]
 
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
 
# "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit."  [https://forum.fractalaudio.com/threads/lets-talk-about-the-depth-control.88747/#post-1071598 source]
Line 1,534: Line 1,458:
 
# "The BE has very light power supply filtering like old Plexis." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/post-1990715 source]
 
# "The BE has very light power supply filtering like old Plexis." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-01.165716/post-1990715 source]
 
# (Cygnus) "All the Friedman models are now based on the latest amp. Our reference amp was made in 2018 and has the feedback off the 4-ohm tap." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2047861 source]
 
# (Cygnus) "All the Friedman models are now based on the latest amp. Our reference amp was made in 2018 and has the feedback off the 4-ohm tap." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-4-cygnus-firmware-public-beta.170253/post-2047861 source]
 +
# (Cygnus) "That's the way the HBE channel sounds. The problem with the design is that the drive control is located between the 3rd and 4th gain stages. Too far back IMO. This causes a lot of distortion and also a lot of bias excursion before the drive control with no way to control it. In most amps the drive control is located after the first stage (input buffer). Some amps have a second drive control, typically called an Overdrive, located further downstream which allows you to balance the pre- and post distortion. One way to deal with it is to decrease the Input Trim and increase the Input Drive. You can also try reducing the Master Bias Excursion but that won't get rid of the pre-drive control distortion. A lot of people like this sound though. It has a certain stringy quality that many people find desirable." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-10-cygnus-firmware-public-beta-7.171198/post-2062927 source]
 +
# (Cygnus) "There are now three "Voicings": V1, V2 and V3 corresponding to the three positions of the Voice switch." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-11-cygnus-firmware-public-beta-8.171486/ source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-friedman-be-and-hbe-friedman-be-100.113559 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-friedman-be-and-hbe-friedman-be-100.113559 Yek's write-up]
  
==FRIEDMAN BE V1 C45==
+
==FRIEDMAN BE C45==
 +
 
 +
==FRIEDMAN BE V1==
 +
 
 +
==FRIEDMAN BE V1 FAT==
  
 
==FRIEDMAN BE V2==
 
==FRIEDMAN BE V2==
  
==FRIEDMAN BE V2 C45==
+
==FRIEDMAN BE V3==
 +
 
 +
==FRIEDMAN HBE 2010==
 +
 
 +
==FRIEDMAN HBE C45==
  
 
==FRIEDMAN HBE V1==
 
==FRIEDMAN HBE V1==
  
==FRIEDMAN HBE V1 C45==
+
==FRIEDMAN HBE V1 FAT==
 
 
==FRIEDMAN HBE V1 Fat==
 
  
==FRIEDMAN HBE V2 ==
+
==FRIEDMAN HBE V2==
  
==FRIEDMAN HBE V2 C45==
+
==FRIEDMAN HBE V3 ==
  
 
==FRIEDMAN SMALL BOX (based on Friedman Smallbox)==
 
==FRIEDMAN SMALL BOX (based on Friedman Smallbox)==
Line 1,558: Line 1,490:
  
 
Model:
 
Model:
# Channel 2
+
* Channel 2
  
 
[[Cabinet models list |Cab:]] Friedman 2x12 (G12M)
 
[[Cabinet models list |Cab:]] Friedman 2x12 (G12M)
  
Gain, Master, Bass, Middle, Treble, Presence, Bright switch (channel 1 only)
+
Gain, Master, Bass, Middle, Treble, Presence, Bright switch (channel 1 only, not modeled)
  
Fractal Audio:
 
 
# "The schematic shows a 2.2 nF coupling cap off the first stage but the actual amp has a 4.7 nF. 2.2 nF would mean less bass. I can only assume the amp was built to the latest specs. If an amp model is "G3'd" it is deadly accurate. I go through the amps and check the values of each component, measure the voltages, compare the frequency response to the model, etc., etc., etc. If the model is too bassy for you then you would find the real amp too bassy, or at least our particular reference model." [http://forum.fractalaudio.com/threads/friedman-sm-box-smallbox.99488/#post-1193341 source]
 
# "The schematic shows a 2.2 nF coupling cap off the first stage but the actual amp has a 4.7 nF. 2.2 nF would mean less bass. I can only assume the amp was built to the latest specs. If an amp model is "G3'd" it is deadly accurate. I go through the amps and check the values of each component, measure the voltages, compare the frequency response to the model, etc., etc., etc. If the model is too bassy for you then you would find the real amp too bassy, or at least our particular reference model." [http://forum.fractalaudio.com/threads/friedman-sm-box-smallbox.99488/#post-1193341 source]
 
# "If you want more clarity in the low mids (...) reduce Negative Feedback. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. (...) The amp will sound tighter and clearer in the low mids." [http://forum.fractalaudio.com/threads/underrated-amp-models.109894/page-2#post-1316362 source]
 
# "If you want more clarity in the low mids (...) reduce Negative Feedback. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. (...) The amp will sound tighter and clearer in the low mids." [http://forum.fractalaudio.com/threads/underrated-amp-models.109894/page-2#post-1316362 source]
Line 1,576: Line 1,507:
 
[[file:fryette.jpg|300px]]
 
[[file:fryette.jpg|300px]]
  
Model:
+
Models:
# Less gain
+
* "Less" mode
# More gain
+
* "More" mode
  
 
[[Cabinet models list | Cab:]] Fryette 4x12 P50E (Fane F70G)
 
[[Cabinet models list | Cab:]] Fryette 4x12 P50E (Fane F70G)
Line 1,593: Line 1,524:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Gibson 1x10
 
[[Cabinet models list | Cab:]] Gibson 1x10
  
Volume, Reverb, Tremolo
+
Volume, Tremolo, Reverb (not modeled)
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-gibtone-scout.113698 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-gibtone-scout.113698 Yek's write-up]
Line 1,606: Line 1,537:
  
 
Models:
 
Models:
# Channel 2- (Plexi)
+
* Channel 2+ (based on Marshall JC800)
# Channel 2+ (JC800)
+
* Channel 2- (based on Marshall Plexi)
# Channel 3 (VH4)
+
* Channel 3 (based on Diezel VH4)
  
 
[[Cabinet models list |Cab:]] Diezel 4x12 (V30, G12-K100)
 
[[Cabinet models list |Cab:]] Diezel 4x12 (V30, G12-K100)
Line 1,614: Line 1,545:
 
Gain (not on channel 1), Bass, Middle (1 kHz), Treble, Master, Presence (> 3kHz), Deep (120Hz), Mid-Cut (not modeled), Gain Boost switch (not modeled)
 
Gain (not on channel 1), Bass, Middle (1 kHz), Treble, Master, Presence (> 3kHz), Deep (120Hz), Mid-Cut (not modeled), Gain Boost switch (not modeled)
  
Fractal Audio:
 
Fractal Audio:
 
 
# "The reason Diezels compress so much is due to the cathode follower design. You can reduce the compression in the models by lowering the Compression parameter in the Cathode Follower section." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-00.165157/post-1981183 source]
 
# "The reason Diezels compress so much is due to the cathode follower design. You can reduce the compression in the models by lowering the Compression parameter in the Cathode Follower section." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-14-00.165157/post-1981183 source]
 
# (to reproduce the Mid Cut function) "Use a Peak EQ filter at 400 Hz with a Q of 1.4. Decrease its Gain until the desired scoop is achieved. Play with the Q to set the width of the scoop." [https://forum.fractalaudio.com/posts/1144887/ source]
 
# (to reproduce the Mid Cut function) "Use a Peak EQ filter at 400 Hz with a Q of 1.4. Decrease its Gain until the desired scoop is achieved. Play with the Q to set the width of the scoop." [https://forum.fractalaudio.com/posts/1144887/ source]
Line 1,630: Line 1,559:
  
 
Models:
 
Models:
# Normal channel
+
* Normal channel
# Brilliant channel
+
* Brilliant channel
# jumpered channels
+
* Normal and Brilliant channels jumpered
  
 
[[Cabinet models list |Cab:]] Hiwatt 4x12 (Fane)
 
[[Cabinet models list |Cab:]] Hiwatt 4x12 (Fane)
Line 1,638: Line 1,567:
 
Volume, Master, Bass, Middle, Treble, Presence
 
Volume, Master, Bass, Middle, Treble, Presence
  
Fractal Audio:
 
 
# "I have a 1974 Hiwatt DR-103. The model is based on that. It is one of the Harry Joyce, Hylight era models. Still has the original tubes. Closet find and sounds glorious." [https://forum.fractalaudio.com/posts/497513/ source]
 
# "I have a 1974 Hiwatt DR-103. The model is based on that. It is one of the Harry Joyce, Hylight era models. Still has the original tubes. Closet find and sounds glorious." [https://forum.fractalaudio.com/posts/497513/ source]
  
Line 1,652: Line 1,580:
  
 
Model:
 
Model:
# High gain channel
+
* High gain channel
  
 
[[Cabinet models list | Cab:]] BadCat 1x12 (proprietary Celestion)
 
[[Cabinet models list | Cab:]] BadCat 1x12 (proprietary Celestion)
  
Gain, Edge, Level, Bass, Mid-range switch, Treble, Brilliance, Master
+
Gain, Edge (not modeled), Level, Bass, Mid-range switch (not modeled), Treble, Brilliance, Master
  
Fractal Audio:
 
 
# "Brilliance is their name for Hi-Cut. I set the Edge control to where I thought it sounded best. It essentially does the same thing as the Bright knob though less precise."
 
# "Brilliance is their name for Hi-Cut. I set the Edge control to where I thought it sounded best. It essentially does the same thing as the Bright knob though less precise."
 
# "The amp has a Hi Cut but it's labeled Brilliance. It's wired backwards so turning it CW gets brighter." [http://forum.fractalaudio.com/threads/hotkitty-1-05-is-nasty-as-hell.107651/page-2#post-1289111 source]
 
# "The amp has a Hi Cut but it's labeled Brilliance. It's wired backwards so turning it CW gets brighter." [http://forum.fractalaudio.com/threads/hotkitty-1-05-is-nasty-as-hell.107651/page-2#post-1289111 source]
Line 1,670: Line 1,597:
  
 
Models:
 
Models:
# OD1 mode
+
* OD1 mode
# OD1 mode with Bass Shift engaged
+
* OD1 mode with Bass Shift engaged
# OD2 mode
+
* OD2 mode
# OD2 with Bass Shift engaged
+
* OD2 with Bass Shift engaged
  
Volume, Gain, Bass, Mid, Treble, Presence, Bass shift
+
Volume, Gain, Bass, Mid, Treble, Presence (preamp), Bass shift
  
Fractal Audio:
 
 
# "The power amp is based on a typical Marshall 100 watts power amp of the same era."
 
# "The power amp is based on a typical Marshall 100 watts power amp of the same era."
 
# "The JMP-1 tone controls have more range than the actual preamp. The preamp has about +/- 8 dB for each tone control while the model has the standard +/- 12 dB."
 
# "The JMP-1 tone controls have more range than the actual preamp. The preamp has about +/- 8 dB for each tone control while the model has the standard +/- 12 dB."
 
# "Actually a JMP-1 is unique in that the tone controls do not interact. Most guitar amps use a passive "tone stack" where the controls interact. The JMP-1 has a fixed passive tone stack followed by an active 4-band EQ. The Axe-Fx tone controls replicate this EQ but the controls have a greater range." [https://forum.fractalaudio.com/threads/is-the-brit-pre-good-enough.132950/#post-1573028 source]
 
# "Actually a JMP-1 is unique in that the tone controls do not interact. Most guitar amps use a passive "tone stack" where the controls interact. The JMP-1 has a fixed passive tone stack followed by an active 4-band EQ. The Axe-Fx tone controls replicate this EQ but the controls have a greater range." [https://forum.fractalaudio.com/threads/is-the-brit-pre-good-enough.132950/#post-1573028 source]
# (about Def Leppard) "The amp model you are looking for is "JMPre-1 OD1". Some cabs you might like to try with that amp model: Factory 2 #97 2x12 RECTO V60 57 OH, Factory 2 #995 4x12 UBER V30 57 OFF-AXIS, Factory 2 #530 4x12 BRIT 70s GB 121 I." [https://forum.fractalaudio.com/threads/are-phil-and-viv-using-brit-pre-or-jmpre-1-on-the-iii.139394 source]
+
# (Def Leppard) "The amp model you are looking for is "JMPre-1 OD1". Some cabs you might like to try with that amp model: Factory 2 #97 2x12 RECTO V60 57 OH, Factory 2 #995 4x12 UBER V30 57 OFF-AXIS, Factory 2 #530 4x12 BRIT 70s GB 121 I." [https://forum.fractalaudio.com/threads/are-phil-and-viv-using-brit-pre-or-jmpre-1-on-the-iii.139394 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-pre-and-brit-jmpre-1-marshall-jmp-1.112139/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-brit-pre-and-brit-jmpre-1-marshall-jmp-1.112139/ Yek's write-up]
Line 1,696: Line 1,622:
  
 
Models:
 
Models:
# Fat switch disabled
+
* Fat switch OFF
# Fat switch enabled
+
* Fat switch ON
  
 
[[Cabinet models list | Cab:]] Fender 1x12 (Eminence, Jensen C12N, P12R)
 
[[Cabinet models list | Cab:]] Fender 1x12 (Eminence, Jensen C12N, P12R)
  
Bass, Middle, Treble, Gain, Volume, FAT button (boosts gain and midrange frequencies), Reverb
+
Bass, Middle, Treble, Gain, Volume, FAT button (boosts gain and midrange frequencies), Reverb (not modeled)
  
Fractal Audio:
 
 
# "The Blues Jr. amp has a fixed presence circuit." [https://forum.fractalaudio.com/threads/question-of-proper-axe-eq-values-for-amps-that-dont-have-them.67260/#post-828733 source]
 
# "The Blues Jr. amp has a fixed presence circuit." [https://forum.fractalaudio.com/threads/question-of-proper-axe-eq-values-for-amps-that-dont-have-them.67260/#post-828733 source]
# "The Eggie is very similar to a Blues Jr. Basically the same preamp with some minor tweaks."
+
# "They're actually pretty decent little amps and sound great when cranked." [https://forum.fractalaudio.com/threads/forgot-how-loud-tube-amps-are.170551/post-2052934 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-jr-blues-fender-blues-junior.113925/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-jr-blues-fender-blues-junior.113925/ Yek's write-up]
Line 1,716: Line 1,641:
  
 
Models:
 
Models:
# Crunch Orange: based on a JCM 2203
+
* Crunch Orange: based on a JCM 2203
# Crunch Red: based on a modded JCM 2203
+
* Crunch Red: based on a modded JCM 2203
# Lead Orange: more gain
+
* Lead Orange: more gain
# Lead Red: even more gain
+
* Lead Red: even more gain
  
 
[[Cabinet models list | Cab:]] Marshall 4x12 (V30 and G12H)
 
[[Cabinet models list | Cab:]] Marshall 4x12 (V30 and G12H)
  
Volume, Gain, Bass, Middle, Treble, Master, Presence, Resonance, noise gate, Mid-Shift (around 650hz off and around 500hz on)
+
Volume, Gain, Bass, Middle, Treble, Master, Presence, Resonance, Gate (not modeled), Mid-Shift (around 650hz off and around 500hz on, not modeled)
  
Fractal Audio:
 
 
# "Joe said he puts all the tone controls at around 10:00." [http://forum.fractalaudio.com/threads/jvm-js-in-the-tonestack.109946/#post-1316690 source]
 
# "Joe said he puts all the tone controls at around 10:00." [http://forum.fractalaudio.com/threads/jvm-js-in-the-tonestack.109946/#post-1316690 source]
 
# "The JVM has a huge plate resistor on the cathode follower, the JS does not." [https://forum.fractalaudio.com/threads/jvm-sounding-weird.150157/page-2#post-1785256 source]
 
# "The JVM has a huge plate resistor on the cathode follower, the JS does not." [https://forum.fractalaudio.com/threads/jvm-sounding-weird.150157/page-2#post-1785256 source]
Line 1,742: Line 1,666:
  
 
Model:
 
Model:
# single model
+
* Single model  
  
 
[[Cabinet models list| Cab:]] Roland 2x12 ("silver" AlNiCo)
 
[[Cabinet models list| Cab:]] Roland 2x12 ("silver" AlNiCo)
  
Volume, Bass, Mid, Treble, Bright switch, Distortion, Chorus, Reverb
+
Volume, Bass, Mid, Treble, Bright switch. Not modeled: Distortion, Chorus, Reverb
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-jazz-120-roland-jazz-chorus-120.113865/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-jazz-120-roland-jazz-chorus-120.113865/ Yek's write-up]
  
==LEGATO 100 (based on Steve Vai's Carvin Legacy VL100)==
+
==LEGEND 100 (based on Carvin Legacy)==
  
 
[[file:legacy.jpg|300px]]   
 
[[file:legacy.jpg|300px]]   
  
Model:
+
Formerley: CALI LEGGY (VL100) and LEGATO 100 (VL300)
# Lead channel
+
 
 +
Models:
 +
* Legend 100: lead channel of Carvin VL100 Legacy
 +
* Legend 100 II: channel 3 of Carvin VL300 Legacy 3
  
 
[[Cabinet models list | Cab:]] Carvin 2x12 or 4x12 (V30)
 
[[Cabinet models list | Cab:]] Carvin 2x12 or 4x12 (V30)
  
Lead channel: Presence, Treble (11kHz), Mid (650Hz), Bass (80Hz), Drive, Volume
+
VL100: Presence, Treble (11kHz), Mid (650Hz), Bass (80Hz), Drive, Volume
 +
 
 +
VL300: Bass, Middle, Treble, Presence, Drive, Volume, Master, Boost (not modeled), Reverb (not modeled), Gain switch (not modeled)
  
Fractal Audio:
 
 
# "The thing that makes a Legacy unique is the tone stack. It uses a "James" tone stack which is more like hi-fi tone controls." [https://forum.fractalaudio.com/threads/thank-you-fractal-for-the-leggy-legacy-model-its-great.47586/#post-620139 source]
 
# "The thing that makes a Legacy unique is the tone stack. It uses a "James" tone stack which is more like hi-fi tone controls." [https://forum.fractalaudio.com/threads/thank-you-fractal-for-the-leggy-legacy-model-its-great.47586/#post-620139 source]
 
# "Adds the "Legato 100" model based on Steve Vai's Legacy 100. This model is unique in that it uses a Baxandall (sometimes called a "James") tone stack. More often used on tube hi-fi gear the controls are less interactive than a typical guitar amp tone stack and impart a different tonal quality." [https://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-4-01-beta.119527/ source]
 
# "Adds the "Legato 100" model based on Steve Vai's Legacy 100. This model is unique in that it uses a Baxandall (sometimes called a "James") tone stack. More often used on tube hi-fi gear the controls are less interactive than a typical guitar amp tone stack and impart a different tonal quality." [https://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-4-01-beta.119527/ source]
 
# "The Legato 100 is based on a one-of-a-kind version owned by a certain Californian guitar player. It is a very dark amp. Part of this is due to the tapers on the tone pots. With everything at noon the tone stack looks like a highshelf with a good amount of high frequency cut. The tone stack is a Baxandall which is more common in hi-fi gear than guitar amps. It lends a unique character to the tone." [https://forum.fractalaudio.com/posts/1426142/ source]
 
# "The Legato 100 is based on a one-of-a-kind version owned by a certain Californian guitar player. It is a very dark amp. Part of this is due to the tapers on the tone pots. With everything at noon the tone stack looks like a highshelf with a good amount of high frequency cut. The tone stack is a Baxandall which is more common in hi-fi gear than guitar amps. It lends a unique character to the tone." [https://forum.fractalaudio.com/posts/1426142/ source]
 
# "SV's personal settings are: Drive: 7.5, Bass: 6, Mid: 4, Treble: 8, Presence: 8. I had to increase the Mid control on the model to about 5 to match the amp which indicates the mid pot on the amp was greater than spec. This is not unusual. Typical consumer-grade pots have pretty poor tolerance in both end-to-end resistance and resistance at the midpoint." [https://forum.fractalaudio.com/posts/1429558/ source]
 
# "SV's personal settings are: Drive: 7.5, Bass: 6, Mid: 4, Treble: 8, Presence: 8. I had to increase the Mid control on the model to about 5 to match the amp which indicates the mid pot on the amp was greater than spec. This is not unusual. Typical consumer-grade pots have pretty poor tolerance in both end-to-end resistance and resistance at the midpoint." [https://forum.fractalaudio.com/posts/1429558/ source]
 +
# (Cygnus) "Carvin Legacy 100. Legend II is channel 3 from the Legacy 3." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-12-cygnus-firmware-public-release-candidate.172027/post-2075753 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-cali-leggy-and-legato-100-carvin-legacy-vl100.112449 Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-cali-leggy-and-legato-100-carvin-legacy-vl100.112449 Yek's write-up]
 +
 +
==LEGEND 100 II==
 +
 +
==MATCHBOX CHIEFTAIN 1 (based on Matchless Chieftain)==
 +
 +
[[File:chieftain.jpg|300px]]
 +
 +
Formerly: BOUTIQUE 1 and BOUTIQUE 2
 +
 +
Models:
 +
* Single channel
 +
* Boosted for more gain and high-frequency emphasis
 +
 +
[[Cabinet models list |Cab:]] Matchless 2x12 (G12M and G12H)
 +
 +
Volume, Master, Bass, Mid, Treble, Brilliance
 +
 +
# "The secret of the Chieftain is the split cathode bias. Most "Class-A" amps use a shared cathode bias but the Chieftain uses separate cathode bias networks which results in less bias shift so there's less fizz." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-03.158240/post-1895726 source]
 +
 +
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-boutique-matchless-chieftain.111832/ Yek's write-up]
 +
 +
==MATCHBOX CHIEFTAIN 2==
  
 
==MATCHBOX D-30 (based on Matchless DC-30)==
 
==MATCHBOX D-30 (based on Matchless DC-30)==
Line 1,774: Line 1,725:
  
 
Models:
 
Models:
# Channel 1 (12AX7) with Master Volume bypassed
+
* Channel 1 (12AX7), Master Volume bypassed
# Channel 2 (EF86) with Master Volume bypassed
+
* Channel 2 (EF86), Master Volume bypassed
  
 
[[Cabinet models list | Cab:]] Matchless 2x12 (25w G12M and 30w G12H)
 
[[Cabinet models list | Cab:]] Matchless 2x12 (25w G12M and 30w G12H)
  
Channel 1: Volume, Bass, Treble. Shared: Cut and bypassable Master
+
Channel 1: Volume, Bass, Treble, Cut, bypassable Master
  
Channel 2: Volume, Tone. Shared: Cut and bypassable Master
+
Channel 2: Volume, Tone, Cut, bypassable Master
  
Fractal Audio:
 
 
# "The DC-30 is basically an AC-30 copy. The voltages are a bit different but the topology is nearly identical. However, IMO, it does sound better. Not sure why. Perhaps the better quality components. AC-30's have kind of crappy OTs." [https://forum.fractalaudio.com/posts/968982/ source]
 
# "The DC-30 is basically an AC-30 copy. The voltages are a bit different but the topology is nearly identical. However, IMO, it does sound better. Not sure why. Perhaps the better quality components. AC-30's have kind of crappy OTs." [https://forum.fractalaudio.com/posts/968982/ source]
# (about channel 2) "The switch selects the coupling capacitor between the EF86 and the volume pot." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-9-00-beta.130981/page-11#post-1552400 source]
+
# (channel 2) "The switch selects the coupling capacitor between the EF86 and the volume pot." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-9-00-beta.130981/page-11#post-1552400 source]
# (firmware release notes Ares 11.01) "Added “Matchbox D-30 EF86” amp model. While the real amp has a six-position Tone switch, the model has a continuously variable tone control. Note that the Tone control is mapped to the Bass control in Ideal mode as the Tone switch is essentially a bass cut control."
+
# "Added “Matchbox D-30 EF86” amp model. While the real amp has a six-position Tone switch, the model has a continuously variable tone control. Note that the Tone control is mapped to the Bass control in Ideal mode as the Tone switch is essentially a bass cut control."
 
# “The new DC-30 model may have dethroned the mighty AC-20 as my favorite "Class A" model.” [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-11-01.156108/post-1858859 source]
 
# “The new DC-30 model may have dethroned the mighty AC-20 as my favorite "Class A" model.” [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-11-01.156108/post-1858859 source]
  
Line 1,798: Line 1,748:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Dr. Z 2x12 (V30 and G12H)
 
[[Cabinet models list | Cab:]] Dr. Z 2x12 (V30 and G12H)
Line 1,811: Line 1,761:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Dr. Z 1x12 (G12H)
 
[[Cabinet models list | Cab:]] Dr. Z 1x12 (G12H)
  
Volume, Master, Bass, Mid, Treble, Cut, Reverb on some models
+
Volume, Master, Bass, Mid, Treble, Cut, Reverb on some models (not modeled)
  
Fractal Audio:
 
 
# "Dr. Z is the quintessential country amp." [https://forum.fractalaudio.com/posts/828934/ source]"
 
# "Dr. Z is the quintessential country amp." [https://forum.fractalaudio.com/posts/828934/ source]"
 
# "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch). Our particular amp says "Humbucker" inside the chassis. Not sure if the difference in the cathode circuit is because Dr. Z likes split cathode for humbucking guitars or what." [https://forum.fractalaudio.com/threads/papery-buzz-under-some-models.149193/page-2#post-1772639 source]
 
# "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch). Our particular amp says "Humbucker" inside the chassis. Not sure if the difference in the cathode circuit is because Dr. Z likes split cathode for humbucking guitars or what." [https://forum.fractalaudio.com/threads/papery-buzz-under-some-models.149193/page-2#post-1772639 source]
Line 1,828: Line 1,777:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Dr.Z 1x12 (G12H)
 
[[Cabinet models list | Cab:]] Dr.Z 1x12 (G12H)
  
Volume, Master, Bass, Mid, Treble, Cut, Reverb, Pentode/Triode switch
+
Volume, Master, Bass, Mid, Treble, Cut, Reverb (not modeled), Pentode/Triode switch (not modeled)
  
Fractal Audio:
 
 
# "Dr. Z is the quintessential country amp." [https://forum.fractalaudio.com/posts/828934/ source]
 
# "Dr. Z is the quintessential country amp." [https://forum.fractalaudio.com/posts/828934/ source]
  
Line 1,844: Line 1,792:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Swart 1x12 (Mojotone BV-25m)
 
[[Cabinet models list | Cab:]] Swart 1x12 (Mojotone BV-25m)
  
Volume, Tone (model: Treble), Reverb, Tremolo
+
Volume, Tone, Reverb (not modeled), Tremolo
  
Fractal Audio:
 
 
# "It's unique character comes from the PI. It's a cathodyne phase inverter so it doesn't drive the grids as hard." [https://forum.fractalaudio.com/posts/828241/ source]
 
# "It's unique character comes from the PI. It's a cathodyne phase inverter so it doesn't drive the grids as hard." [https://forum.fractalaudio.com/posts/828241/ source]
 
# "The real amp is known for it's tremolo so that's why we used the bias trem on the preset. Bias trem works by modulating the power tube grid bias. One of the side-effects is that the effect becomes less pronounced as you play harder which makes it basically "auto ducking". Also since it's modulating the bias it gives an almost Univibe like effect since the phase changes a bit too." [http://forum.fractalaudio.com/threads/patch-62-nuclear-tone-weird-tremolo-effect.122258/#post-1454602 source]
 
# "The real amp is known for it's tremolo so that's why we used the bias trem on the preset. Bias trem works by modulating the power tube grid bias. One of the side-effects is that the effect becomes less pronounced as you play harder which makes it basically "auto ducking". Also since it's modulating the bias it gives an almost Univibe like effect since the phase changes a bit too." [http://forum.fractalaudio.com/threads/patch-62-nuclear-tone-weird-tremolo-effect.122258/#post-1454602 source]
Line 1,860: Line 1,807:
 
[[File:dumble.jpg|300px]]
 
[[File:dumble.jpg|300px]]
  
Model:
+
Models:
# Clean: based on HRM circuit, Clean channel
+
* Clean: based on HRM circuit, Clean channel
# Ford: based on schematics of Robben Ford's #102 Dumble, Overdrive channel, with Pre Amp Boost (PAB) disengaged
+
* Ford: based on schematics of Robben Ford's #102 Dumble, Overdrive channel, Pre Amp Boost (PAB) OFF
# Ford Mid-Boost: idem, Overdrive channel, with PAB engaged and Mid switch engaged
+
* Ford PAB: Ford model, PAB ON (bypass the tone controls), Mid switch OFF
# Ford PAB: idem, Overdrive channel, with PAB engaged and Mid switch disengaged
+
* Ford PAB Mid: Ford model, PAB ON, Mid switch ON
# HRM: based on HRM circuit, Overdrive channel, Mid switch disengaged
+
* HRM: based on HRM circuit, Overdrive channel, Mid switch OFF
# HRM Mid: based on HRM circuit, Overdrive channel, Mid switch engaged
+
* HRM Mid: based on HRM circuit, Overdrive channel, Mid switch ON
  
 
[[Cabinet models list | Cab:]] Dumble 2x12 or 4x12 (G12-65, EVM)
 
[[Cabinet models list | Cab:]] Dumble 2x12 or 4x12 (G12-65, EVM)
  
Volume (Clean), Bass, Middle, Treble, Overdrive Level, Ratio, Volume (Overdrive), Master Volume, Presence, Bright switch, Mid boost switch, Jazz/Rock switch, Pre Amp Boost (PAB)
+
Volume (Clean), Bass, Middle, Treble, Overdrive Level, Ratio, Volume (Overdrive), Master, Presence, Bright switch, Mid boost switch, Jazz/Rock switch (not modeled), Pre Amp Boost (PAB)
  
Fractal Audio:
 
 
# "The ODS100 has two drive controls, one is right at the input, the other is in the lead boost section."
 
# "The ODS100 has two drive controls, one is right at the input, the other is in the lead boost section."
 
# "I hate to admit it but there is something special about a real Dumble. I don't know what it is but there is something in the voicing. The various clones I have are cool and have their own thing going but they don't sound like the Dumble. Hard amp to play though. Very unforgiving but tremendous clarity." [https://forum.fractalaudio.com/posts/824398/ source]
 
# "I hate to admit it but there is something special about a real Dumble. I don't know what it is but there is something in the voicing. The various clones I have are cool and have their own thing going but they don't sound like the Dumble. Hard amp to play though. Very unforgiving but tremendous clarity." [https://forum.fractalaudio.com/posts/824398/ source]
Line 1,888: Line 1,834:
 
==ODS-100 FORD==
 
==ODS-100 FORD==
  
==ODS-100 FORD MID-BOOST==
+
==ODS-100 FORD PAB==
  
==ODS-100 FORD PAB (formerly FORD 2)==
+
==ODS-100 FORD PAB MID==
  
 
==ODS-100 HRM==
 
==ODS-100 HRM==
Line 1,901: Line 1,847:
  
 
Model:
 
Model:
# Lead channel
+
* Lead channel
  
 
[[Cabinet models list | Cab:]] Peavey 4x12 (Sheffield 1200)
 
[[Cabinet models list | Cab:]] Peavey 4x12 (Sheffield 1200)
  
Pre and Post Gain, Low, Mid, High, Resonance, Presence, Bright and Crunch switches (Rhythm channel only)
+
Pre Gain, Post Gain (Master), Low, Mid, High, Resonance, Presence, Bright and Crunch switches (Rhythm channel only, not modeled)
  
Fractal Audio:
 
 
# "I have a "holy grail" Block Letter 5150 (supposedly). It sounds way better than most 5150s for some reason which is a good thing for you guys. I think it's partly due to the fact that it has a bias mod so it's biased a bit warmer than a stock version." [https://forum.fractalaudio.com/posts/1152978/ source]
 
# "I have a "holy grail" Block Letter 5150 (supposedly). It sounds way better than most 5150s for some reason which is a good thing for you guys. I think it's partly due to the fact that it has a bias mod so it's biased a bit warmer than a stock version." [https://forum.fractalaudio.com/posts/1152978/ source]
  
Line 1,917: Line 1,862:
  
 
Models:
 
Models:
# Clean channel with Bright engaged
+
* Clean channel, Bright switch OFF
# Clean channel with Bright disengaged
+
* Clean channel, Bright switch ON
# Crunch channel with Bright engaged
+
* Crunch channel, Bright switch OFF
# Crunch channel with Bright disengaged
+
* Crunch channel, Bright switch ON
# Lead channel
+
* Lead channel
  
 
[[Cabinet models list | Cabs]] Peavey 4x12 (V30)
 
[[Cabinet models list | Cabs]] Peavey 4x12 (V30)
Line 1,929: Line 1,874:
 
Lead channel: Pre (gain), Low, Mid, High, Post (Master), Resonance, Presence
 
Lead channel: Pre (gain), Low, Mid, High, Post (Master), Resonance, Presence
  
Fractal Audio:
 
 
# "Chris Quigley's 6505 was the reference amp. It's my amp now. It's a very good sounding one." [https://forum.fractalaudio.com/posts/824411/ source]
 
# "Chris Quigley's 6505 was the reference amp. It's my amp now. It's a very good sounding one." [https://forum.fractalaudio.com/posts/824411/ source]
# (about channel 1) "Someone was looking for that amp model recently so I dug our 6505+ out and was surprised at how nice that channel sounds." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-1-03-firmware-release.106931/#post-1278700 source]
+
# (channel 1) "Someone was looking for that amp model recently so I dug our 6505+ out and was surprised at how nice that channel sounds." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-1-03-firmware-release.106931/#post-1278700 source]
 
#  "A 6505+ is identical to a 5150 except it has no bright cap. Use the 5150 model and turn off the bright switch." [https://forum.fractalaudio.com/threads/request-acoustic-peavy-6505.56527/#post-711922 source]
 
#  "A 6505+ is identical to a 5150 except it has no bright cap. Use the 5150 model and turn off the bright switch." [https://forum.fractalaudio.com/threads/request-acoustic-peavy-6505.56527/#post-711922 source]
 
# "The Bright switch on clean and crunch channels does not engage a capacitor on the drive potentiometer as is typical but instead disengages a treble cut circuit"
 
# "The Bright switch on clean and crunch channels does not engage a capacitor on the drive potentiometer as is typical but instead disengages a treble cut circuit"
Line 1,945: Line 1,889:
 
==PVH 6160+ LEAD (based on Peavey 6505+ / EVH 5150-II)==
 
==PVH 6160+ LEAD (based on Peavey 6505+ / EVH 5150-II)==
  
==PLEXI 100W 1970 (based on Marshall Plexi)==
+
==PLEXI 100W 1970 (based on 1970 100W Marshall Plexi)==
  
 
[[file:SLP.png|300px]]
 
[[file:SLP.png|300px]]
  
 
Models:
 
Models:
# 1970 100 watts, EL34
+
* 1970 100 watts, EL34
# 1969 100 watts, High Treble channel
+
* 1969 100 watts, High Treble channel
# 1969 100 watts, jumpered channels
+
* 1969 100 watts, Normal and High Treble channels jumpered
# 1969 100 watts, Normal channel
+
* 1969 100 watts, Normal channel
# 1972 50 watts, 6550 power tubes, jumpered channels
+
* 1972 50 watts, 6550 power tubes, jumpered channels
# 6AC7 50 watts, 6AC7 power tubes
+
* 6AC7 50 watts, 6AC7 power tubes
# 1981 50 watts JMP with master volume
+
* 1981 50 watts JMP with master volume
# 1972 50 watts, EL34, High Treble channel ("High 1")
+
* 1972 50 watts, EL34, High Treble channel ("High 1")
# 1972 50 watts, EL34, High Treble channel ("High 2") (2nd triode stage has a 0.68uF cathode bypass capacitor, which was added in the early 70’s and gives a slightly brighter tone)
+
* 1972 50 watts, EL34, High Treble channel ("High 2") (2nd triode stage has a 0.68uF cathode bypass capacitor, which was added in the early 70’s and gives a slightly brighter tone)
# 1972 50 watts, EL34, jumpered channels
+
* 1972 50 watts, EL34, Normal and High Treble channels jumpered
# 1972 50 watts, EL34, Normal channel
+
* 1972 50 watts, EL34, Normal channel
  
 
[[Cabinet models list | Cab:]] Marshall 4x12 (G12M, G12H)
 
[[Cabinet models list | Cab:]] Marshall 4x12 (G12M, G12H)
  
Volume (jumpered channels: Volume Normal and Volume Treble), Bass, Middle, Treble, Presence, Master (Plexi 2204 only)
+
Volume Normal / Volume Treble, Bass, Middle, Treble, Presence, Master (Plexi 2204 only)
  
Fractal Audio:
 
 
# "1970 Marshall 1959SLP 100 has a darker, smoother sound than earlier Plexis."
 
# "1970 Marshall 1959SLP 100 has a darker, smoother sound than earlier Plexis."
 
# "One of the first mods people make to real 'Plexi' Marshalls is to "clip the bright cap". The bright cap varied over the years, supposedly depending on what was lying around in the shop. The model defaults to the bright cap in the circuit. If you turn off Bright you're effectively clipping the bright cap. The bright cap in Marshalls can be very bright and harsh. However, if you crank the Master you might find the extra brightness helps compensate for the power amp getting darker."
 
# "One of the first mods people make to real 'Plexi' Marshalls is to "clip the bright cap". The bright cap varied over the years, supposedly depending on what was lying around in the shop. The model defaults to the bright cap in the circuit. If you turn off Bright you're effectively clipping the bright cap. The bright cap in Marshalls can be very bright and harsh. However, if you crank the Master you might find the extra brightness helps compensate for the power amp getting darker."
Line 1,973: Line 1,916:
 
# "My settings for a "typical" Plexi tone are Bass: 2, Mid: 8, Treble 7.5. Adjust Presence to taste." [https://forum.fractalaudio.com/posts/1179420/ source]
 
# "My settings for a "typical" Plexi tone are Bass: 2, Mid: 8, Treble 7.5. Adjust Presence to taste." [https://forum.fractalaudio.com/posts/1179420/ source]
 
# "Try the Plexi 100W 1970 with Factory Cab 54. Be sure to dial it in like you would in 1970, i.e. turn the Mid, Treble and Presence way up; turn Norm Drive and Bass down a bit." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-2-00-public-beta-deux.109702/#post-1312811 source]
 
# "Try the Plexi 100W 1970 with Factory Cab 54. Be sure to dial it in like you would in 1970, i.e. turn the Mid, Treble and Presence way up; turn Norm Drive and Bass down a bit." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-2-00-public-beta-deux.109702/#post-1312811 source]
# (Plexi Normal) "The topology of that model does not support a bright cap and the actual amp has no bright cap." [http://forum.fractalaudio.com/threads/q2-01-plexi-50w-nrml-bright-cap-doesnt-work.111836/#post-1337410 source]
 
 
# (Boston/Rockman sound) "Plexi Jump. Everything on 7. Put a Filter block in front: Type: Peaking, Freq: ~800 Hz, Q: 0.707, Gain 12 dB."  
 
# (Boston/Rockman sound) "Plexi Jump. Everything on 7. Put a Filter block in front: Type: Peaking, Freq: ~800 Hz, Q: 0.707, Gain 12 dB."  
# (favorite classic Plexi) "50w 6550." [http://forum.fractalaudio.com/threads/what-is-your-favorite-amp-block-for-classic-marshall-plexi.123567/#post-1470317 source]
+
# (Plexi 100W 1970) "I've never cared for that model nor the actual amp. IMO it doesn't have enough feedback (100K off the 4-ohm tap). Some amps of that era had 47K off the 4-ohm tap. Some had 47K off the 8-ohm tap. Some had 100K off the 8-ohm tap and some even had 47K off the 16-ohm tap! IOW all over the map. Bottom line: try adjusting Negative Feedback. I always raise it up a bit with that model. Around 4 or so." [http://forum.fractalaudio.com/threads/plexi-100watt-1970-is-something-wrong-with-it-now.125522/#post-1493932 source]
# (Plexi 100w 1970) "I've never cared for that model nor the actual amp. IMO it doesn't have enough feedback (100K off the 4-ohm tap). Some amps of that era had 47K off the 4-ohm tap. Some had 47K off the 8-ohm tap. Some had 100K off the 8-ohm tap and some even had 47K off the 16-ohm tap! IOW all over the map. Bottom line: try adjusting Negative Feedback. I always raise it up a bit with that model. Around 4 or so." [http://forum.fractalaudio.com/threads/plexi-100watt-1970-is-something-wrong-with-it-now.125522/#post-1493932 source]
 
 
# "What you are hearing is output transformer high frequency resonance. Old Plexis didn't do this because they had good transformers. New transformers are crappy and resonate at the cutoff frequency because they are underdamped. This causes a raspy, fizzy texture to the distortion. The transformer resonance is adjustable but the parameter isn't exposed to the user. When you turn it up you get that same squishy rasp that you are hearing. For the Plexis I have the damping set to flat with no resonance because that's how our vintage Plexis measure. Our 50W is a little underdamped but people complain about raspy high frequencies so I erred on the safe side." [http://forum.fractalaudio.com/threads/dimed-real-plexi-vs-dimed-simulation-q8-01.127161/page-2#post-1513888 source]
 
# "What you are hearing is output transformer high frequency resonance. Old Plexis didn't do this because they had good transformers. New transformers are crappy and resonate at the cutoff frequency because they are underdamped. This causes a raspy, fizzy texture to the distortion. The transformer resonance is adjustable but the parameter isn't exposed to the user. When you turn it up you get that same squishy rasp that you are hearing. For the Plexis I have the damping set to flat with no resonance because that's how our vintage Plexis measure. Our 50W is a little underdamped but people complain about raspy high frequencies so I erred on the safe side." [http://forum.fractalaudio.com/threads/dimed-real-plexi-vs-dimed-simulation-q8-01.127161/page-2#post-1513888 source]
 
# "When modding Marshalls for higher gain sometimes the modder will decrease the input frequency response to reduce noise and fizziness. You can do this by reducing the high-cut frequency in the input EQ. Or you can use a high-shelf filter which is a little more subtle. Another technique is to put a capacitor across the second-to-last triode stage. This is the "Triode 1 Plate Freq" parameter. Reduce this to around 2 kHz to start which is typical of amps like an SLO100, etc." [https://forum.fractalaudio.com/threads/dialling-in-the-marshalls.143682/post-1707222 source]
 
# "When modding Marshalls for higher gain sometimes the modder will decrease the input frequency response to reduce noise and fizziness. You can do this by reducing the high-cut frequency in the input EQ. Or you can use a high-shelf filter which is a little more subtle. Another technique is to put a capacitor across the second-to-last triode stage. This is the "Triode 1 Plate Freq" parameter. Reduce this to around 2 kHz to start which is typical of amps like an SLO100, etc." [https://forum.fractalaudio.com/threads/dialling-in-the-marshalls.143682/post-1707222 source]
Line 1,986: Line 1,927:
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-plexi-marshall-plexi.114529/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-plexi-marshall-plexi.114529/ Yek's write-up]
  
==PLEXI 100W HIGH==
+
==PLEXI 100W HIGH (based on 1969 100W Marshall Plexi)==
 
 
==PLEXI 100W JUMP==
 
 
 
==PLEXI 100W NRML==
 
  
==PLEXI 50W 6550==
+
==PLEXI 100W JUMPED==
  
Fractal Audio:
+
==PLEXI 100W NORMAL==
  
# "My Favorite is the Plexi 50W 6550."
+
# "The topology of that model does not support a bright cap and the actual amp has no bright cap." [http://forum.fractalaudio.com/threads/q2-01-plexi-50w-nrml-bright-cap-doesnt-work.111836/#post-1337410 source]
  
==PLEXI 2204==
+
==PLEXI 2204 (based on 1981 50W Marshall JMP 2204)==
  
Fractal Audio:
 
 
# "Based on a 1981 JMP 50W Master Volume head."
 
# "Based on a 1981 JMP 50W Master Volume head."
 
# (recommended settings) "Everything on 10."
 
# (recommended settings) "Everything on 10."
 
# "There were several versions of the "2204" Plexi. Our model is based on a 1981 2204 Master Volume JMP. It has a different circuit than a JCM800." [https://forum.fractalaudio.com/threads/marshall-sound-clips.169296/post-2034903 source]
 
# "There were several versions of the "2204" Plexi. Our model is based on a 1981 2204 Master Volume JMP. It has a different circuit than a JCM800." [https://forum.fractalaudio.com/threads/marshall-sound-clips.169296/post-2034903 source]
  
==PLEXI 50W HIGH 1==
+
==PLEXI 50W 6550 (based on 1972 50W Marshall Plexi with 6550 power tubes)==
  
==PLEXI 50W HIGH 2==
+
==PLEXI 50W 6CA7 (based on 50W Marshall Plexi with 6AC7 power tubes)==
  
Fractal Audio:
+
50W Plexi with 6CA7 power tubes
# "Similar to Plexi 50W High 1 except the second triode stage has a 0.68uF cathode bypass capacitor. The second bypass capacitor was added in the early 70’s and gives a slightly brighter tone."
 
  
==PLEXI 50W JUMP==
+
# "That's based on my favorite Plexi. I have several but this particular one has 6CA7s and 82K grid resistors(!). Usually the grid resistors are 220K." [https://forum.fractalaudio.com/threads/plexi-50w-6ca7-sooooo-good.169084/post-2031777 source]
  
==PLEXI 50W NORMAL==
+
==PLEXI 50W HIGH 1 (based on 1972 50W Marshall Plexi)==
  
==PLEXI 50W 6CA7==
+
==PLEXI 50W HIGH 2==
  
50W Plexi with 6CA7 power tubes
+
# "Similar to Plexi 50W High 1 except the second triode stage has a 0.68uF cathode bypass capacitor. The second bypass capacitor was added in the early 70’s and gives a slightly brighter tone."
  
Fractal Audio:
+
==PLEXI 50W JUMPED==
  
# "That's based on my favorite Plexi. I have several but this particular one has 6CA7s and 82K grid resistors(!). Usually the grid resistors are 220K." [https://forum.fractalaudio.com/threads/plexi-50w-6ca7-sooooo-good.169084/post-2031777 source]
+
==PLEXI 50W NORMAL==
  
 
==PORTA-BASS (based on Ampeg Portaflex bass amp)==
 
==PORTA-BASS (based on Ampeg Portaflex bass amp)==
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
[[Cabinet models list | Cabs]] SVT 8x10
+
[[Cabinet models list | Cab:]] SVT 8x10
  
Notes: See SV Bass
+
Gain, Volume, Bass, Mid, Treble, Mid Frequency (not modeled), input pad (not modeled), compression (not modeled), limiter (not modeled), Ultra Hi/Lo switches (not modeled)
  
Compression, Limiter, Gain, Bass, Mid, 5-way Midrange Frequency switch, Ultra Hi and Ultra Lo switches, Treble, Master Volume
+
It's not been disclosed on which Portaflex amplifier (PF-xxx) the model is based
 +
 
 +
Notes: see SV Bass
  
 
==PRINCE TONE 5F2 (based on Fender Tweed Princeton, 5F2-A)==
 
==PRINCE TONE 5F2 (based on Fender Tweed Princeton, 5F2-A)==
Line 2,040: Line 1,977:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Fender 1x10 (C10n)
 
[[Cabinet models list | Cab:]] Fender 1x10 (C10n)
Line 2,051: Line 1,988:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
Volume, Bass, Treble
 
Volume, Bass, Treble
  
Fractal Audio:
 
 
# "Based on a Fender AA964 Princeton. This particular amp is an early CBS “Silverface” but still using pre-CBS design and components."
 
# "Based on a Fender AA964 Princeton. This particular amp is an early CBS “Silverface” but still using pre-CBS design and components."
  
 
See above
 
See above
  
==PRINCE TONE REVERB (based on '66 Fender blackface Princeton with reverb, AA964)==
+
==PRINCE TONE REVERB (based on 1966 blackface Fender Princeton with reverb, AA964)==
  
 
[[file:princetonreverb.jpg|300px]]
 
[[file:princetonreverb.jpg|300px]]
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
Volume, Bass, Treble, Reverb
+
Volume, Bass, Treble, Reverb (not modeled)
  
Fractal Audio:
 
 
# "A Princeton Reverb has an extra gain stage due to the reverb recovery. Hence it has more gain." [https://forum.fractalaudio.com/threads/what-causes-this-volume-difference.97845/#post-1174202 source]
 
# "A Princeton Reverb has an extra gain stage due to the reverb recovery. Hence it has more gain." [https://forum.fractalaudio.com/threads/what-causes-this-volume-difference.97845/#post-1174202 source]
  
Line 2,077: Line 2,012:
  
 
Models:
 
Models:
# Recto1: Orange channel (two modes) and Red channel of the original two-channel Rectifier
+
* Recto1: original 2-channel Rectifier, Orange channel, Modern mode
# Recto2: Orange and Red channels, both in Vintage and Modern mode, of the newer three-channel Rectifier
+
* Recto1: original 2-channel Rectifier, Orange channel, Vintage mode
 +
* Recto1: original 2-channel Rectifier, Red channel, Modern mode
 +
* Recto2: later 3-channel Rectifier, Orange channel, Modern mode
 +
* Recto2: later 3-channel Rectifier, Orange channel, Vintage mode
 +
* Recto2: later 3-channel Rectifier, Red channel, Modern mode
 +
* Recto2: later 3-channel Rectifier, Red channel, Vintage mode
  
 
[[Cabinet models list | Cab:]] Mesa 4x12 (V30)
 
[[Cabinet models list | Cab:]] Mesa 4x12 (V30)
Line 2,084: Line 2,024:
 
Gain, Master, Bass, Middle, Treble, Presence
 
Gain, Master, Bass, Middle, Treble, Presence
  
Fractal Audio:
 
 
# "For an amp like the Recto you want the Master below 5.0." [https://forum.fractalaudio.com/threads/quick-question-on-noise.25195/#post-392883 source]
 
# "For an amp like the Recto you want the Master below 5.0." [https://forum.fractalaudio.com/threads/quick-question-on-noise.25195/#post-392883 source]
 
# "The reason you're hearing the highs rolled off is because the Master is too high. As you increase the Master the highs get muffled. 7.02 for the Recto Master is ridiculous and will sound like crap." [https://forum.fractalaudio.com/threads/axe-fx-vs-tube-amps-my-first-experience.27192/page-3#post-412068 source]
 
# "The reason you're hearing the highs rolled off is because the Master is too high. As you increase the Master the highs get muffled. 7.02 for the Recto Master is ridiculous and will sound like crap." [https://forum.fractalaudio.com/threads/axe-fx-vs-tube-amps-my-first-experience.27192/page-3#post-412068 source]
Line 2,094: Line 2,033:
 
# "If you are using the Modern modes be very careful with the MV. If you turn it up too high it will flub out really quick. If in doubt reduce the MV. Compensate with the Level control." [https://forum.fractalaudio.com/posts/829334/ source]
 
# "If you are using the Modern modes be very careful with the MV. If you turn it up too high it will flub out really quick. If in doubt reduce the MV. Compensate with the Level control." [https://forum.fractalaudio.com/posts/829334/ source]
 
# "The Modern mode in Rectos has no negative feedback so there's a huge bass boost from the speaker impedance. Fortunately you can reduce this by reducing the LF Resonance on the Spkr tab which is something you can't do with the real amp without trying different speakers or cabinet." [https://forum.fractalaudio.com/posts/829906/ source]
 
# "The Modern mode in Rectos has no negative feedback so there's a huge bass boost from the speaker impedance. Fortunately you can reduce this by reducing the LF Resonance on the Spkr tab which is something you can't do with the real amp without trying different speakers or cabinet." [https://forum.fractalaudio.com/posts/829906/ source]
# "Depth works by varying the negative feedback at low frequencies. There is no NFB in the Modern Red mode so the Depth knob won't do anything. NFB is set to 0.01 just to fool the GUI into displaying Presence instead of HiCut below the left knob." And: "When you put a Recto into Modern Red mode it opens a relay which removes the NFB." [https://forum.fractalaudio.com/posts/1111770/ source]
+
# "Depth works by varying the negative feedback at low frequencies. There is no NFB in the Modern Red mode so the Depth knob won't do anything." [https://forum.fractalaudio.com/posts/1111770/ source]
 
# "All passive tone controls interact and all the Axe-Fx tone stacks replicate this behavior. The unique thing about a Dual Recto tone stack is that the Presence control is part of the tone stack. So the Recto tone controls also interact with the presence control." [https://forum.fractalaudio.com/threads/dual-recto-eq-potentially-silly-question.93890/#post-1126242 source]
 
# "All passive tone controls interact and all the Axe-Fx tone stacks replicate this behavior. The unique thing about a Dual Recto tone stack is that the Presence control is part of the tone stack. So the Recto tone controls also interact with the presence control." [https://forum.fractalaudio.com/threads/dual-recto-eq-potentially-silly-question.93890/#post-1126242 source]
 
# "If you are using the Modern mode then it's all about the Spkr page. Since that mode has no negative feedback the speaker resonance has a tremendous effect on the sound. Adjust LF Res, Freq and Q to get desired response." [http://forum.fractalaudio.com/threads/anyone-have-any-luck-with-the-rectifier-models.109907/#post-1315682 source]
 
# "If you are using the Modern mode then it's all about the Spkr page. Since that mode has no negative feedback the speaker resonance has a tremendous effect on the sound. Adjust LF Res, Freq and Q to get desired response." [http://forum.fractalaudio.com/threads/anyone-have-any-luck-with-the-rectifier-models.109907/#post-1315682 source]
# "Another thing with the Modern modes is that the power amp distorts early (again since there is no negative feedback and, therefore, the power amp has a lot more gain). At 9:00 on the Master the power amp is distorting (it's probably a linear taper pot for the ol' "Wow, this amp is loud bro!"). The taper of the Axe-Fx Master Volume is not the same and you have to turn it up higher to get the same amount of virtual power amp distortion. Another thing is that if you put ANYTHING in the loop of a Recto it changes the tone significantly. Even just a short cable. All the models were made with the loop off. And another thing is that Rectos changed a lot. I have three of them and they all sound completely different. One of them has a different value Gain pot than the others. One of them has a different value bright cap than the one with the same Gain pot. Since the gain pot and bright cap interact this makes a HUGE difference. Experiment with the Bright Cap value. The Recto1 models are based on our Rev. F (IIRC, whatever the desirable ones are). The Recto2 models are based on the latest version." [http://forum.fractalaudio.com/threads/anyone-have-any-luck-with-the-rectifier-models.109907/#post-1315714 source]
+
# "Another thing with the Modern modes is that the power amp distorts early (again since there is no negative feedback and, therefore, the power amp has a lot more gain). At 9:00 on the Master the power amp is distorting (it's probably a linear taper pot for the ol' "Wow, this amp is loud bro!"). (...) Another thing is that if you put ANYTHING in the loop of a Recto it changes the tone significantly. Even just a short cable. All the models were made with the loop off. And another thing is that Rectos changed a lot. I have three of them and they all sound completely different. One of them has a different value Gain pot than the others. One of them has a different value bright cap than the one with the same Gain pot. Since the gain pot and bright cap interact this makes a HUGE difference. Experiment with the Bright Cap value. The Recto1 models are based on our Rev. F (IIRC, whatever the desirable ones are). The Recto2 models are based on the latest version." [http://forum.fractalaudio.com/threads/anyone-have-any-luck-with-the-rectifier-models.109907/#post-1315714 source]
 
# "We have three of them, a single and two duals." [http://forum.fractalaudio.com/threads/when-were-the-rectos-improved.122719/#post-1459883 source]
 
# "We have three of them, a single and two duals." [http://forum.fractalaudio.com/threads/when-were-the-rectos-improved.122719/#post-1459883 source]
 
# "If you want that Recto crunch but not so flubby and fizzy try the SOLO models." [http://forum.fractalaudio.com/threads/ax8-v7-00-public-beta.125015/page-3#post-1487394 source]
 
# "If you want that Recto crunch but not so flubby and fizzy try the SOLO models." [http://forum.fractalaudio.com/threads/ax8-v7-00-public-beta.125015/page-3#post-1487394 source]
 
# "A Recto is not a Mark series amp. Totally different preamp topology. A Recto preamp is very similar to a SLO100." [https://forum.fractalaudio.com/threads/the-greatest-digital-guitar-recording-of-all-time.154788/post-1841448 source]
 
# "A Recto is not a Mark series amp. Totally different preamp topology. A Recto preamp is very similar to a SLO100." [https://forum.fractalaudio.com/threads/the-greatest-digital-guitar-recording-of-all-time.154788/post-1841448 source]
# (what amp model is closest to the Mesa Roadster) "Recto 2." [https://forum.fractalaudio.com/threads/what-amp-model-is-closest-to-the-mesa-roadster.127060/post-1512755 source]
+
# (amp model closest to the Mesa Roadster) "Recto 2." [https://forum.fractalaudio.com/threads/what-amp-model-is-closest-to-the-mesa-roadster.127060/post-1512755 source]
 
# "The Rectifier preamp is almost identical to an SLO100." ... "There's a treble cut on the tone stack and a some minor changes to the power amp and power supply but it's basically a ripoff. The schematics are readily available for both so anyone interested can see for themselves. Personally I hate the 39K resistor. It biases the stage much too cold for my tastes. It prevents blocking distortion but there are better ways to do it IMO. The FAS Modern model is similar but biases the stage more towards the center." [https://forum.fractalaudio.com/threads/new-amp-models.159097/post-1901310 source]
 
# "The Rectifier preamp is almost identical to an SLO100." ... "There's a treble cut on the tone stack and a some minor changes to the power amp and power supply but it's basically a ripoff. The schematics are readily available for both so anyone interested can see for themselves. Personally I hate the 39K resistor. It biases the stage much too cold for my tastes. It prevents blocking distortion but there are better ways to do it IMO. The FAS Modern model is similar but biases the stage more towards the center." [https://forum.fractalaudio.com/threads/new-amp-models.159097/post-1901310 source]
 
# "Using the loop on a modern 3-channel rectifier changes the tone pretty dramatically (we model the amp with the loop bypassed). There are several reasons for this:
 
# "Using the loop on a modern 3-channel rectifier changes the tone pretty dramatically (we model the amp with the loop bypassed). There are several reasons for this:
Line 2,108: Line 2,047:
 
## An extra highpass filter is present due to the loop send stage. The corner frequency is around 30 Hz. That's low but it does affect subharmonics due to intermodulation. I would've made the capacitor around 1uF." [https://www.thegearpage.net/board/index.php?threads/blind-test-mesa-dual-rectifier-vs-mystery-modeler-update-results-revealed.2208367/post-31646126 source]
 
## An extra highpass filter is present due to the loop send stage. The corner frequency is around 30 Hz. That's low but it does affect subharmonics due to intermodulation. I would've made the capacitor around 1uF." [https://www.thegearpage.net/board/index.php?threads/blind-test-mesa-dual-rectifier-vs-mystery-modeler-update-results-revealed.2208367/post-31646126 source]
 
# "Recto2 is based on a new 3-channel Dual Rectifier. Recto1 is based on the original 2-channel." [https://www.thegearpage.net/board/index.php?threads/blind-test-mesa-dual-rectifier-vs-mystery-modeler-update-results-revealed.2208367/post-31647001 source]
 
# "Recto2 is based on a new 3-channel Dual Rectifier. Recto1 is based on the original 2-channel." [https://www.thegearpage.net/board/index.php?threads/blind-test-mesa-dual-rectifier-vs-mystery-modeler-update-results-revealed.2208367/post-31647001 source]
 +
# "I have three Rectos: an old Single Rectifier, an old (Rev. G maybe) Dual Rectifier and a new Dual Rectifier. They all sound completely different. The old Dual is the best sounding of the bunch." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-9-cygnus-firmware-public-beta-6.171176/post-2062420 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-recto1-and-recto2-mesa-dual-rectifier-2-ch-and-3-ch.114701/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-recto1-and-recto2-mesa-dual-rectifier-2-ch-and-3-ch.114701/ Yek's write-up]
Line 2,128: Line 2,068:
  
 
Models:
 
Models:
# Bright switch on
+
* Bright switch ON
# Bright switch off
+
* Bright switch OFF
  
 
[[Cabinet models list | Cab:]] 1x12 (Alnico, G12M)
 
[[Cabinet models list | Cab:]] 1x12 (Alnico, G12M)
Line 2,135: Line 2,075:
 
Volume, Bass, Treble, Cut, Bright switch
 
Volume, Bass, Treble, Cut, Bright switch
  
Fractal Audio:
 
 
# "The Ruby Rocket is not the same as an actual Trainwreck Rocket. There are topology differences and the amps don't sound the same." [https://forum.fractalaudio.com/posts/1154295/ source]
 
# "The Ruby Rocket is not the same as an actual Trainwreck Rocket. There are topology differences and the amps don't sound the same." [https://forum.fractalaudio.com/posts/1154295/ source]
 
# "Ruby Rocket is based on a Paul Ruby Rocket which is based on a TW Rocket but with some notable differences." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-18-00-public-beta.96198/page-30#post-1154336 source]
 
# "Ruby Rocket is based on a Paul Ruby Rocket which is based on a TW Rocket but with some notable differences." [https://forum.fractalaudio.com/threads/axe-fx-ii-firmware-18-00-public-beta.96198/page-30#post-1154336 source]
Line 2,150: Line 2,089:
  
 
Model (in the Axe-Fx III):
 
Model (in the Axe-Fx III):
# Fractal Audio's SV Bass model prior to the change in firmware Ares 2.05 and later for the Axe-Fx III
+
* SV Bass 1: Fractal Audio's SV Bass model prior to the change in firmware Ares 2.05 and later for the Axe-Fx III
# Based on a 1970 Ampeg SVT with 6550 power tubes and the midrange switch in position 3
+
* SV Bass 2: 1970 Ampeg SVT with 6550 power tubes and the midrange switch in position 3  
  
Notes: on the Axe-Fx II (firmware Ares) these models are reversed. [https://forum.fractalaudio.com/threads/sv-bass-1-and-sv-bass-2-in-ares-1-03.149364/ source]
+
Note: on the Axe-Fx II (firmware Ares) these models are reversed [https://forum.fractalaudio.com/threads/sv-bass-1-and-sv-bass-2-in-ares-1-03.149364/ source]
  
 
[[Cabinet models list | Cab:]] SVT 8x10
 
[[Cabinet models list | Cab:]] SVT 8x10
Line 2,168: Line 2,107:
  
 
Models:
 
Models:
# Clean channel
+
* Clean channel
# Lead channel
+
* Lead channel
  
Clean channel: Volume, Bass, Treble, Bright switch. Shared: Master, Presence, Excursion, Boost switch
+
Clean channel: Volume, Bass, Treble, Bright switch. Shared: Master, Presence, Excursion, Boost switch (not modeled)
  
Lead channel: Gain, Volume, Bass, Middle, Treble, Shift EQ, Bright switch, Mode switch. Shared: Master, Presence, Excursion, Boost switch
+
Lead channel: Gain, Volume, Bass, Middle, Treble, Shift EQ (not modeled), Bright switch, Mode switch (not modeled). Shared: Master, Presence, Excursion, Boost switch (not modeled)
  
 
[[Cabinet models list | Cab:]] Bogner 1x12 or 2x12 (Classic 80, V30)
 
[[Cabinet models list | Cab:]] Bogner 1x12 or 2x12 (Classic 80, V30)
  
Fractal Audio:
 
 
# "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." [https://forum.fractalaudio.com/posts/1031334/ source]
 
# "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." [https://forum.fractalaudio.com/posts/1031334/ source]
 
# "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." [https://forum.fractalaudio.com/posts/1047275/ source]
 
# "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." [https://forum.fractalaudio.com/posts/1047275/ source]
 
# "The original Shiva models were based on a borrowed amp. We now have a 20th Anniversary Shiva (with KT88s) and the new models are based on that amp. We did notice that this amp has less gain than the one used originally but the model is faithful to the amp." [https://forum.fractalaudio.com/posts/1152978/ source]
 
# "The original Shiva models were based on a borrowed amp. We now have a 20th Anniversary Shiva (with KT88s) and the new models are based on that amp. We did notice that this amp has less gain than the one used originally but the model is faithful to the amp." [https://forum.fractalaudio.com/posts/1152978/ source]
 
# "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." [https://forum.fractalaudio.com/threads/fast-pick-attack-amp.170370/post-2049711 source]
 
# "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." [https://forum.fractalaudio.com/threads/fast-pick-attack-amp.170370/post-2049711 source]
 +
# "Most amps use a linear taper for the treble pot. Bogners use a log taper. So when the knob is at noon on a Bogner it's similar to 8 o'clock on most amps." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-11-cygnus-firmware-public-beta-8.171486/post-2067364 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-shiver-bogner-shiva-20th-ann.114764/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-shiver-bogner-shiva-20th-ann.114764/ Yek's write-up]
Line 2,192: Line 2,131:
  
 
Models:
 
Models:
# Normal channel: Clean mode
+
* Normal channel in Clean mode
# Normal channel: Rhythm mode
+
* Normal channel in Rhythm mode
# Overdrive channel
+
* Overdrive channel
  
 
[[Cabinet models list| Cab:]] Soldano 4x12 (Eminence)
 
[[Cabinet models list| Cab:]] Soldano 4x12 (Eminence)
Line 2,200: Line 2,139:
 
Gain, Bass, Middle, Treble, Master, Presence, Bright switch (Normal channel only), Depth (with Depth mod)
 
Gain, Bass, Middle, Treble, Master, Presence, Bright switch (Normal channel only), Depth (with Depth mod)
  
Fractal Audio:
 
 
# "The SLO-100 is the loudest amp I've ever used. It feels like there's a small nuclear explosion going off inside when ever you hit a power chord. It's a wicked amp but not something I would recommend for anything but large gigs. If you like the SLO-100 model you might want to try the Recto models too. It's not widely known but the Rectifier preamp is a derivative of the SLO-100. Some minor changes but the basic topology is identical."
 
# "The SLO-100 is the loudest amp I've ever used. It feels like there's a small nuclear explosion going off inside when ever you hit a power chord. It's a wicked amp but not something I would recommend for anything but large gigs. If you like the SLO-100 model you might want to try the Recto models too. It's not widely known but the Rectifier preamp is a derivative of the SLO-100. Some minor changes but the basic topology is identical."
 
# "I have a really good SLO-100. An original black faceplate version. Pristine condition. That amp was one of the primary amps used in the G2 modeling development. It was by studying that and a really nice JCM-800 that I finally figured out the secret to cathode follower." [https://forum.fractalaudio.com/posts/562187/ source]
 
# "I have a really good SLO-100. An original black faceplate version. Pristine condition. That amp was one of the primary amps used in the G2 modeling development. It was by studying that and a really nice JCM-800 that I finally figured out the secret to cathode follower." [https://forum.fractalaudio.com/posts/562187/ source]
Line 2,220: Line 2,158:
 
==SOLO 100 LEAD==
 
==SOLO 100 LEAD==
  
==SOLO 100 RHY==
+
==SOLO 100 RHYTHM==
  
 
==SOLO 88 CLEAN (based on Soldano X88R preamp)==
 
==SOLO 88 CLEAN (based on Soldano X88R preamp)==
Line 2,227: Line 2,165:
  
 
Models:
 
Models:
# Clean channel  
+
* Clean channel  
# Rhythm channel
+
* Rhythm channel
# Lead channel
+
* Lead channel
  
 
Gain, Bass, Middle, Treble, Volume, Bright switch (Clean and Rhythm channels)
 
Gain, Bass, Middle, Treble, Volume, Bright switch (Clean and Rhythm channels)
  
Fractal Audio:
 
 
# "Solo 88 RHY is based on an X88R since the rhythm channel of an X99 is identical to an SLO-100. FWIW, I have two X88Rs and the model agrees with both."  
 
# "Solo 88 RHY is based on an X88R since the rhythm channel of an X99 is identical to an SLO-100. FWIW, I have two X88Rs and the model agrees with both."  
  
Line 2,247: Line 2,184:
  
 
Models:
 
Models:
# Clean channel, with Bright switch
+
* Clean channel
# Lead channel, Bright off
+
* Lead channel, Bright OFF
# Lead channel, Bright on
+
* Lead channel, Bright ON
  
 
Gain, Bass, Middle, Treble, Volume, Bright switch
 
Gain, Bass, Middle, Treble, Volume, Bright switch
  
Fractal Audio:
 
 
# "The rhythm channel of an X99 is identical to a SLO 100." [https://forum.fractalaudio.com/posts/718846/ source]
 
# "The rhythm channel of an X99 is identical to a SLO 100." [https://forum.fractalaudio.com/posts/718846/ source]
 
# "Power amp: same as SLO100." [https://forum.fractalaudio.com/posts/1250203/ source]
 
# "Power amp: same as SLO100." [https://forum.fractalaudio.com/posts/1250203/ source]
Line 2,269: Line 2,205:
  
 
Models:
 
Models:
# Overdrive channel in OD-1 (Rhythm) mode
+
* Overdrive channel in OD-1 (Rhythm) mode
# Overdrive channel in OD-2 (Lead) mode
+
* Overdrive channel in OD-2 (Lead) mode
  
 
[[Cabinet models list| Cab:]] Splawn 4x12 (G12M, G12-65, V30)
 
[[Cabinet models list| Cab:]] Splawn 4x12 (G12M, G12-65, V30)
Line 2,276: Line 2,212:
 
Resonance, Presence, Bass, Middle, Treble, Master, Gain
 
Resonance, Presence, Bass, Middle, Treble, Master, Gain
  
Fractal Audio:
 
 
# "Based on a Splawn Nitro with KT-88 power tubes."
 
# "Based on a Splawn Nitro with KT-88 power tubes."
  
Line 2,288: Line 2,223:
  
 
Models:
 
Models:
# Overdrive channel, Rhythm mode, 1st gear (Plexi)
+
* Overdrive channel, Rhythm mode, 1st gear ("Plexi")
# Overdrive channel, Rhythm mode, 2nd gear (hot-rodded JCM 800)
+
* Overdrive channel, Rhythm mode, 2nd gear ("hot-rodded JCM 800")
# Overdrive channel, Rhythm mode, 3rd gear (super hot-rodded 800)
+
* Overdrive channel, Rhythm mode, 3rd gear ("super hot-rodded 800")
# Overdrive channel, Lead mode, 1st gear
+
* Overdrive channel, Lead mode, 1st gear
# Overdrive channel, Lead mode, 2nd gear
+
* Overdrive channel, Lead mode, 2nd gear
# Overdrive channel, Lead mode, 3rd gear
+
* Overdrive channel, Lead mode, 3rd gear
  
 
[[Cabinet models list | Cab:]] Splawn (G12M, G12-65, V30)
 
[[Cabinet models list | Cab:]] Splawn (G12M, G12-65, V30)
Line 2,299: Line 2,234:
 
Presence, Bass, Middle, Treble, Volume, Gain, Mode
 
Presence, Bass, Middle, Treble, Volume, Gain, Mode
  
Fractal Audio:
 
 
# "The reason Splawns sound weird is because the tone stack is plate driven. You lose the cathode follower compression and the high source resistance of the plate alters the tone stack frequency response. The plate driven tone stack in the Splawn reduces the highs considerably. You can see this is you run Tone Stack Calculator for the Marshall tone stack and increase the source resistance." [https://forum.fractalaudio.com/posts/1070559/ source]
 
# "The reason Splawns sound weird is because the tone stack is plate driven. You lose the cathode follower compression and the high source resistance of the plate alters the tone stack frequency response. The plate driven tone stack in the Splawn reduces the highs considerably. You can see this is you run Tone Stack Calculator for the Marshall tone stack and increase the source resistance." [https://forum.fractalaudio.com/posts/1070559/ source]
 
# "OD2 switches in a cathode bypass cap which increases the gain of that stage." [https://forum.fractalaudio.com/posts/1158818/ source]
 
# "OD2 switches in a cathode bypass cap which increases the gain of that stage." [https://forum.fractalaudio.com/posts/1158818/ source]
Line 2,321: Line 2,255:
  
 
Model
 
Model
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Suhr 1x12 or 2x12 (V30, G12M)
 
[[Cabinet models list | Cab:]] Suhr 1x12 or 2x12 (V30, G12M)
  
Bass, Middle, Treble, Gain, Power (controls Power Scaling), Drive (acts as Master with Power at 10)
+
Bass, Middle, Treble, Gain, Power (controls Power Scaling, not modeled), Drive (acts as Master with Power at 10)
  
Fractal Audio:
 
 
# "The Badgers were MIMIC'd with power scaling at full. The knobs are a bit confusing on a Badger. The knob closest to the input jack is labeled "Gain". It is equivalent to the Drive knob in the Axe. The knob labeled Drive is the Master Volume." [https://forum.fractalaudio.com/posts/830810/ source]
 
# "The Badgers were MIMIC'd with power scaling at full. The knobs are a bit confusing on a Badger. The knob closest to the input jack is labeled "Gain". It is equivalent to the Drive knob in the Axe. The knob labeled Drive is the Master Volume." [https://forum.fractalaudio.com/posts/830810/ source]
 
# "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion. The worst amp in this regard is the Badger 18. The cathode resistors are very large and the amp shifts into Class B operation early causing a spitty, buzzy distortion quality. This amp, however, is liked by many so that just goes to show that some people like that. It's like fuzz pedals. Some people like that spitty sound. I personally don't like it. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch)." [https://forum.fractalaudio.com/threads/papery-buzz-under-some-models.149193/page-2#post-1772639 source]
 
# "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion. The worst amp in this regard is the Badger 18. The cathode resistors are very large and the amp shifts into Class B operation early causing a spitty, buzzy distortion quality. This amp, however, is liked by many so that just goes to show that some people like that. It's like fuzz pedals. Some people like that spitty sound. I personally don't like it. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch)." [https://forum.fractalaudio.com/threads/papery-buzz-under-some-models.149193/page-2#post-1772639 source]
Line 2,339: Line 2,272:
 
[[File:badger30.jpg‎|300px]]
 
[[File:badger30.jpg‎|300px]]
  
Notes: see above
+
Model
 +
* Single channel
  
==SUPER VERB NORMAL (based on '64 Fender Super Reverb, AB763)==
+
[[Cabinet models list | Cab:]] Suhr 1x12 or 2x12 (V30, G12M)
 +
 
 +
Bass, Middle, Treble, Gain, Power (controls Power Scaling, not modeled), Drive (acts as Master with Power at 10)
 +
 
 +
# "The Badgers were MIMIC'd with power scaling at full. The knobs are a bit confusing on a Badger. The knob closest to the input jack is labeled "Gain". It is equivalent to the Drive knob in the Axe. The knob labeled Drive is the Master Volume." [https://forum.fractalaudio.com/posts/830810/ source]
 +
# "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion. The worst amp in this regard is the Badger 18. The cathode resistors are very large and the amp shifts into Class B operation early causing a spitty, buzzy distortion quality. This amp, however, is liked by many so that just goes to show that some people like that. It's like fuzz pedals. Some people like that spitty sound. I personally don't like it. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch)." [https://forum.fractalaudio.com/threads/papery-buzz-under-some-models.149193/page-2#post-1772639 source]
 +
# "The Badger doesn't have a Bright switch." [https://forum.fractalaudio.com/threads/fixed-next-rel-wild-rumbling-chirping-artifacts-switching-between-presets.154544/post-1837842 source]
 +
# "The controls on the Badger are a bit confusing. Master Volume is labeled Drive. You have the Drive at 10 which means your power amp is at full blast. This can make the bass muddy. Turn the Drive down." [https://www.thegearpage.net/board/index.php?threads/i-have-to-say-im-a-little-upset.2205478/post-31553496 source]
 +
 
 +
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-suhr-badger-18-and-30.115086 Yek's write-up]
 +
 
 +
==SUPER VERB NORMAL (based on 1964 Fender Super Reverb, AB763)==
  
 
[[file:superreverb.jpg‎|300px]]
 
[[file:superreverb.jpg‎|300px]]
  
 
Models:
 
Models:
# Normal channel
+
* Normal channel
# Vibrato channel
+
* Vibrato channel
  
 
[[Cabinet models list | Cab:]] Fender 4x10 (C10R, C10Q, P10R)
 
[[Cabinet models list | Cab:]] Fender 4x10 (C10R, C10Q, P10R)
  
Volume, Bass, Middle (Vibrato channel only), Treble, Bright switch, Reverb, Vibrato
+
Volume, Bass, Middle (Vibrato channel only), Treble, Bright switch, Reverb (not modeled), Vibrato (not modeled)
  
Fractal Audio:
 
 
# "I modeled the Super with V1 pulled as most people pull V1 so the amp has more grunt. Turn down the MV to make it cleaner."
 
# "I modeled the Super with V1 pulled as most people pull V1 so the amp has more grunt. Turn down the MV to make it cleaner."
 
# "The Super Reverb model is based on the amp with V1 removed (which is a common mod). This increases the level into the power amp by about a factor of two." [https://forum.fractalaudio.com/threads/xl-units-quantum-6-fw-austin-buddy-raw-amp-bank-part-i-feedback.123065/#post-1464566 source]
 
# "The Super Reverb model is based on the amp with V1 removed (which is a common mod). This increases the level into the power amp by about a factor of two." [https://forum.fractalaudio.com/threads/xl-units-quantum-6-fw-austin-buddy-raw-amp-bank-part-i-feedback.123065/#post-1464566 source]
 
# "The Super Reverb model is "Diaz Modded". IOW, I pulled V1. This gives the amp a lot more gain so it's not surprising you're getting breakup at around 1.5. You can un-mod the model by turning down the MV Trim to around 0.5." [https://forum.fractalaudio.com/posts/851580/ source]
 
# "The Super Reverb model is "Diaz Modded". IOW, I pulled V1. This gives the amp a lot more gain so it's not surprising you're getting breakup at around 1.5. You can un-mod the model by turning down the MV Trim to around 0.5." [https://forum.fractalaudio.com/posts/851580/ source]
 
# "A Pro Reverb is basically identical to a Super Reverb except for the speakers (and faceplate)." [https://forum.fractalaudio.com/posts/933261/ source] And: "The Blackface Pro Reverb, model AA165, was virtually identical to the AB763 Super Reverb except for the speakers and tone stacks. If you use the Super Verb model and set the Tone Stack type to Blackface you'll basically have a Pro Reverb. Set the Mid control fairly high to emulate the fixed 6.8K mid resistor. I'd say around 7 or 8." [https://forum.fractalaudio.com/posts/1079578/ source]
 
# "A Pro Reverb is basically identical to a Super Reverb except for the speakers (and faceplate)." [https://forum.fractalaudio.com/posts/933261/ source] And: "The Blackface Pro Reverb, model AA165, was virtually identical to the AB763 Super Reverb except for the speakers and tone stacks. If you use the Super Verb model and set the Tone Stack type to Blackface you'll basically have a Pro Reverb. Set the Mid control fairly high to emulate the fixed 6.8K mid resistor. I'd say around 7 or 8." [https://forum.fractalaudio.com/posts/1079578/ source]
# (about blackface versions) "Not a huge change with the Silverfaced versions. They're a little cleaner and brighter but the topology is the same. Some minor circuit changes here and there. Same transformers. The biggest change, IMO, was changing the PI resistors to 47K which gives you a little less gain in the PI." [https://forum.fractalaudio.com/posts/1252495/ source]
+
# (blackface versions) "Not a huge change with the Silverfaced versions. They're a little cleaner and brighter but the topology is the same. Some minor circuit changes here and there. Same transformers. The biggest change, IMO, was changing the PI resistors to 47K which gives you a little less gain in the PI." [https://forum.fractalaudio.com/posts/1252495/ source]
 
# "The Super Reverb is really just a 50W version of a Twin Reverb with different speakers." [https://forum.fractalaudio.com/threads/wanted-amps-to-model.56753/page-4#post-713267 source]
 
# "The Super Reverb is really just a 50W version of a Twin Reverb with different speakers." [https://forum.fractalaudio.com/threads/wanted-amps-to-model.56753/page-4#post-713267 source]
  
Line 2,365: Line 2,309:
 
==SUPER VERB VIBRATO==
 
==SUPER VERB VIBRATO==
  
==SUPERTWEED (custom "Tweed" model)==
+
==SUPERTWEED (custom model)==
  
 
[[File:Logo small.png]]
 
[[File:Logo small.png]]
  
Model:
+
Custom Fractal Audio model
# custom Fractal Audio model
 
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-supertweed-custom-model.115143/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-supertweed-custom-model.115143/ Yek's write-up]
Line 2,379: Line 2,322:
  
 
Model:
 
Model:
# single model
+
* single model
  
 
[[Cabinet models list | Cab:]] Supro 2x12
 
[[Cabinet models list | Cab:]] Supro 2x12
  
 
Volume, Tone
 
Volume, Tone
 
Fractal Audio:
 
  
 
# "They're simple amps with minimal tone shaping." [https://forum.fractalaudio.com/threads/time-for-another-supro.154552/post-1838288 source]
 
# "They're simple amps with minimal tone shaping." [https://forum.fractalaudio.com/threads/time-for-another-supro.154552/post-1838288 source]
Line 2,396: Line 2,337:
  
 
Models:
 
Models:
# Clean channel
+
* Clean channel
# Lead channel
+
* Lead channel
  
 
[[Cabinet models list | Cab:]] Mesa 2x12 (C90)
 
[[Cabinet models list | Cab:]] Mesa 2x12 (C90)
  
Drive, Gain, Treble, Mid, Bass, Presence, Master, Voicing
+
Drive, Gain, Treble, Mid, Bass, Presence, Master, Voicing (not modeled)
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-tx-star-mesa-lone-star.115405/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-tx-star-mesa-lone-star.115405/ Yek's write-up]
Line 2,407: Line 2,348:
 
==TEXAS STAR LEAD==
 
==TEXAS STAR LEAD==
  
==THORDENDAL MODERN (based on Mesa Dual Rectifier)==
+
==THORDENDAL MODERN (custom model, based on Mesa Dual Rectifier)==
  
 
[[file:meshuggah.jpg|300px]]
 
[[file:meshuggah.jpg|300px]]
  
 
Models:
 
Models:
# Modern mode
+
* Modern mode  
# Vintage mode
+
* Vintage mode
  
 
Notes: see Recto
 
Notes: see Recto
  
Fractal Audio:
 
 
# "The old Recto models weren't terribly accurate. When G3 came out the models were accurate but Fredrik contacted me and said something like "ahhhhh, I loved the old Recto model". So I took the old Recto models and made them "Thordendal" models." [http://forum.fractalaudio.com/threads/thordendal-modern-vs-recto-1-modern-red.91645/#post-1269530 source]
 
# "The old Recto models weren't terribly accurate. When G3 came out the models were accurate but Fredrik contacted me and said something like "ahhhhh, I loved the old Recto model". So I took the old Recto models and made them "Thordendal" models." [http://forum.fractalaudio.com/threads/thordendal-modern-vs-recto-1-modern-red.91645/#post-1269530 source]
  
Line 2,429: Line 2,369:
  
 
Models:
 
Models:
# Normal channel
+
* Normal channel
# Vibrato channels
+
* Vibrato channel
  
 
[[Cabinet models list | Cab:]] Fender 2x10
 
[[Cabinet models list | Cab:]] Fender 2x10
Line 2,439: Line 2,379:
  
 
==TRIPLE CREST 2 (based on Mesa/Boogie Triple Crown TC-100)==
 
==TRIPLE CREST 2 (based on Mesa/Boogie Triple Crown TC-100)==
 +
 +
[[file:triplecrown.jpg|300px]]
  
 
Models:
 
Models:
# LO Gain channel
+
* Low gain channel
# HI Gain channel
+
* High gain channel
 
 
Channel 2 (LO Gain): Normal or Tight Mode, Gain, Treble, Mid, Bass, Presence, Reverb (rear panel), Master, attenuator
 
 
 
Channel 3 (HI Gain): Normal or Tight Mode, Gain, Treble, Mid, Bass, Presence, Reverb (rear panel), Master, attenuator
 
  
Fractal Audio:
+
Normal or Tight Mode, Gain, Treble, Mid, Bass, Presence, Reverb (not modeled), Master, attenuator (not modeled)
  
 
# “The actual amp’s “Tight” switch engages a built-in Tube Screamer circuit which can be replicated using a Drive block or the Amp block’s internal Boost feature.” [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-04.159140/post-1901363 source]
 
# “The actual amp’s “Tight” switch engages a built-in Tube Screamer circuit which can be replicated using a Drive block or the Amp block’s internal Boost feature.” [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-04.159140/post-1901363 source]
 
# "The clean channel is like every other Mesa clean channel: a Blackface Fender copy." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-05.159156/post-1901965 source]
 
# "The clean channel is like every other Mesa clean channel: a Blackface Fender copy." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-05.159156/post-1901965 source]
 
# "The clean channel uses the same built-in tube screamer as the other channels. There's a single fixed tube screamer circuit at the input of the amp. It can be switched in via relays which are controlled by the channel switches." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-05.159156/post-1904010 source]
 
# "The clean channel uses the same built-in tube screamer as the other channels. There's a single fixed tube screamer circuit at the input of the amp. It can be switched in via relays which are controlled by the channel switches." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-12-05.159156/post-1904010 source]
 +
# "A Mesa Triple Crown has a built-in Tube Screamer set clean on the input." [https://www.thegearpage.net/board/index.php?threads/looks-like-fractal-devices-are-getting-a-new-modeling-update-cygnus.2224849/post-32213988 source]
  
 
==TRIPLE CREST 3==
 
==TRIPLE CREST 3==
  
==TUBE PRE==
+
==TUBE PRE (generic tube preamp model)==
  
 
[[file:Logo small.png]]
 
[[file:Logo small.png]]
  
Model:
+
Custom Fractal Audio model of a generic tube preamp
# single model
 
  
Fractal Audio:
 
 
# "The Vintage tone stack is a passive EQ model but it has a flat response when the controls are at noon. If you want "active" EQ you need to set the type to Active." [https://forum.fractalaudio.com/threads/is-it-possible-to-bypass-the-preamp.70487/page-2#post-865226 source]
 
# "The Vintage tone stack is a passive EQ model but it has a flat response when the controls are at noon. If you want "active" EQ you need to set the type to Active." [https://forum.fractalaudio.com/threads/is-it-possible-to-bypass-the-preamp.70487/page-2#post-865226 source]
 
# "If you only need power amp modeling, for example when using an external pre-amp through the Axe-Fx, use the Tube Pre model. It uses the Vintage tonestack which is flat when the tone controls are at noon."
 
# "If you only need power amp modeling, for example when using an external pre-amp through the Axe-Fx, use the Tube Pre model. It uses the Vintage tonestack which is flat when the tone controls are at noon."
Line 2,476: Line 2,413:
  
 
Models:
 
Models:
# Lead mode, Preamp Bypass (PAB) engaged
+
* Lead mode, Preamp Bypass (PAB) OFF
# Lead mode, Preamp Bypass off
+
* Lead mode, Preamp Bypass ON (tone controls bypassed)
  
 
[[Cabinet models list | Cab:]] Two Stone 2x12 (G12-65)
 
[[Cabinet models list | Cab:]] Two Stone 2x12 (G12-65)
Line 2,483: Line 2,420:
 
Treble, Mid, Bass, Gain, Master, Lead Gain, Pull Bright
 
Treble, Mid, Bass, Gain, Master, Lead Gain, Pull Bright
  
Fractal Audio:
 
 
# "It's very smooth but there's this unique chirp or something that I've never heard in an amp before. When you hit the note there's this blast of high end that rapidly decays so it has an almost vocal quality. The frequency shaping is very different than most other amps." [https://forum.fractalaudio.com/posts/745084/ source]
 
# "It's very smooth but there's this unique chirp or something that I've never heard in an amp before. When you hit the note there's this blast of high end that rapidly decays so it has an almost vocal quality. The frequency shaping is very different than most other amps." [https://forum.fractalaudio.com/posts/745084/ source]
 
# "The Two Rock is the most unique amp I've ever modeled. Almost like a violin but with this really cool chirp on the pick attack." [https://forum.fractalaudio.com/posts/747921/ source]
 
# "The Two Rock is the most unique amp I've ever modeled. Almost like a violin but with this really cool chirp on the pick attack." [https://forum.fractalaudio.com/posts/747921/ source]
Line 2,496: Line 2,432:
  
 
Models:
 
Models:
# Bass Shift disabled
+
* Bass Shift OFF
# Bass Shift engaged
+
* Bass Shift ON
  
 
[[Cabinet models list | Cab:]] Mesa bass cab
 
[[Cabinet models list | Cab:]] Mesa bass cab
Line 2,512: Line 2,448:
  
 
Models:
 
Models:
# Rhythm 1 channel
+
* Rhythm 1 channel
# Rhythm 2 channel
+
* Rhythm 2 channel
# Lead channel, Voicing: Harmonics, Pull Bright engaged
+
* Lead channel, Voicing: Harmonics, Pull Bright: engaged
# Lead channel, Voicing: Mid Gain, Pull Bright engaged
+
* Lead channel, Voicing: Mid Gain, Pull Bright: engaged
# Lead channel, Voicing: Harmonics, Pull Bright off
+
* Lead channel, Voicing: Harmonics, Pull Bright: off
# Lead channel, Voicing: Mid Gain, Pull Bright off
+
* Lead channel, Voicing: Mid Gain, Pull Bright: off
  
 
[[Cabinet models list | Cab:]] Mesa 1x12 (C90, V30)
 
[[Cabinet models list | Cab:]] Mesa 1x12 (C90, V30)
  
Gain, Lead Drive, Treble, Bass, Mid, Presence, Master. Pull Bright: Rhythm 1 and Lead channel. Pull Fat: Rhythm 2 and Lead channel. Presence Shift: Rhythm 2 and Lead channels, graphic EQ, Pentode/Triode switch, Class-A/Simul-Class switch, Voicing switch (Mid Gain / Harmonics), Variac
+
Gain, Lead Drive, Treble, Bass, Mid, Presence, Master, graphic EQ, Pentode/Triode switch, Class-A/Simul-Class switch, Voicing switch (Mid Gain / Harmonics), Variac
 +
 
 +
Rhythm 1 channel: Pull Bright
 +
 
 +
Rhythm 2 channel: Pull Fat, Presence Shift
 +
 
 +
Lead channel: Pull Bright, Pull Fat, Presence Shift
  
Fractal Audio:
 
 
# "The MK V is basically a compendium of previous Mesa amps. There may be minor differences in tone due to circuit layout but nothing a few tweaks to the EQ can't fix." [https://forum.fractalaudio.com/posts/573437/ source]
 
# "The MK V is basically a compendium of previous Mesa amps. There may be minor differences in tone due to circuit layout but nothing a few tweaks to the EQ can't fix." [https://forum.fractalaudio.com/posts/573437/ source]
 
# “A Mark V is a greatest hits of the Mark IV and IIC+. You already have all those models.” [https://forum.fractalaudio.com/threads/wish-list-new-amps.137944/post-1991426 source]
 
# “A Mark V is a greatest hits of the Mark IV and IIC+. You already have all those models.” [https://forum.fractalaudio.com/threads/wish-list-new-amps.137944/post-1991426 source]
Line 2,542: Line 2,483:
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-usa-clean-lead-rhythm-mesa-boogie-mark-iv.115440/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-usa-clean-lead-rhythm-mesa-boogie-mark-iv.115440/ Yek's write-up]
  
==USA IIC+ (based on Mesa/Boogie Mark IIC+ without GEQ)==
+
==USA IIC+ (based on Mesa/Boogie Mark IIC+)==
  
 
[[file:iic+.jpg|300px]]
 
[[file:iic+.jpg|300px]]
  
 
Models:
 
Models:
# Lead Master Pull Bright engaged
+
* Lead Master Pull Bright engaged
# Lead Master Pull Bright off
+
* Lead Master Pull Bright off
# Lead Master Pull Deep engaged
+
* Lead Master Pull Deep engaged
# Lead Master Pull Deep off
+
* Lead Master Pull Deep off
  
 
[[Cabinet models list | Cab:]] Mesa 1x12 (C90, EVM)
 
[[Cabinet models list | Cab:]] Mesa 1x12 (C90, EVM)
Line 2,556: Line 2,497:
 
Volume (pull: Bright), Treble (pull: Shift = Fat), Bass (pull: Shift, not modeled), Middle, Presence, Master rhythm (pull: Deep), Lead Drive and Master Lead (pull: Bright)
 
Volume (pull: Bright), Treble (pull: Shift = Fat), Bass (pull: Shift, not modeled), Middle, Presence, Master rhythm (pull: Deep), Lead Drive and Master Lead (pull: Bright)
  
Fractal Audio:
 
 
# "The mode in the Mark V is based on the later SimulClass version." [https://forum.fractalaudio.com/posts/910018/ source]
 
# "The mode in the Mark V is based on the later SimulClass version." [https://forum.fractalaudio.com/posts/910018/ source]
 
# "If you want the sound of the non-SimulClass version set Triode 1 Plate Freq to 1350 Hz." [https://forum.fractalaudio.com/posts/910386/ source]
 
# "If you want the sound of the non-SimulClass version set Triode 1 Plate Freq to 1350 Hz." [https://forum.fractalaudio.com/posts/910386/ source]
Line 2,581: Line 2,521:
  
 
==USA IIC+ BRIGHT==
 
==USA IIC+ BRIGHT==
 +
 +
==USA IIC+ DEEP==
  
 
==USA IIC+ DEEP BRIGHT==
 
==USA IIC+ DEEP BRIGHT==
  
==USA IIC+ DEEP==
+
==USA IIC++ (custom model, based on Mesa Mark IIC+)==
 +
 
 +
[[File:Logo small.png]]
  
==USA IIC++ (legacy model based on a Mesa Mark IIC+)==
+
Formerly: METALLICA USA IIC++
  
A model requested by Metallica's engineers after the main IIC+ models were updated. This is not a model of Hetfield's own amp. But it is the model used by Metallica as part of their live sound, which is why it was originally titled "Metallica USA IIC++".
+
Requested by Metallica's engineers after the main IIC+ models were updated. This is not a model of Hetfield's own "crunchberries" amp, nor is it a model of a IIC+ with the IIC++ mod, but it's the model used by Metallica as part of their live sound.
  
<blockquote>"This model is part of our live sound. This amp was removed when the new MKII models were added and firmware updated. I asked if it could be ported for Q3 as I was having a difficult time migrating to the updated firmware and retaining our earlier work." [https://forum.fractalaudio.com/threads/metallica-amp.115857/page-2#post-1384750 source]</blockquote>
+
Notes: see USA IIC+
  
<blockquote>"The IIC++ amp model is the same as the IIC+ with different tapers." [https://forum.fractalaudio.com/threads/question-about-the-mark-series-graphic-eq-modeling.149223/post-1770773 source]</blockquote>
+
# (from Metallica engineers) "This model is part of our live sound. This amp was removed when the new MKII models were added and firmware updated. I asked if it could be ported for Q3 as I was having a difficult time migrating to the updated firmware and retaining our earlier work." [https://forum.fractalaudio.com/threads/metallica-amp.115857/page-2#post-1384750 source]
 +
# "The IIC++ amp model is the same as the IIC+ with different tapers." [https://forum.fractalaudio.com/threads/question-about-the-mark-series-graphic-eq-modeling.149223/post-1770773 source]
  
 
==USA JP IIC+ Green (based on Mesa/Boogie JP-2C John Petrucci signature model)==
 
==USA JP IIC+ Green (based on Mesa/Boogie JP-2C John Petrucci signature model)==
 +
 +
[[File:Jp2c.jpg|300px]]
  
 
Models:
 
Models:
# Green: channel 1
+
* Green: channel 1
# Red: channel 3  
+
* Red: channel 3
# Yellow: channel 2
+
* Red: channel 3, Shred mode
 +
* Yellow: channel 2
 +
* Yellow: channel 2, Shred mode
  
Notes: to emulate the “Shred” mode, turn the High Treble control to approximately 3-4 dB (or adjust to taste, you are not limited by a single switch).
+
Channel 1 (Mark IIC+ Clean): Gain, Master, Presence, Treble, Mid, Bass, Mid/Boost switch, graphic EQ, reverb (not modeled)
 +
 
 +
Channel 2 (Mark IIC+ Gain/Shred): (Pull) Gain, Master, (Pull) Presence, Treble, Mid, Bass, graphic EQ (not modeled), Shred mode switch
 +
 
 +
Channel 3 (Mark IIC+ Gain/Shred): (Pull) Gain, Master, (Pull) Presence, Treble, Mid, Bass, graphic EQ (not modeled), Shred mode switch
  
Fractal Audio:
 
 
# "The JP amp has a fixed input gain control. The "Gain" control on the amp is actually an Overdrive control. If you use Authentic controls there is no Input Gain on "Gain"." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-03.149363/page-3#post-1772020 source]
 
# "The JP amp has a fixed input gain control. The "Gain" control on the amp is actually an Overdrive control. If you use Authentic controls there is no Input Gain on "Gain"." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-03.149363/page-3#post-1772020 source]
 
# "Presence Shift is Presence pull. Tone stack effectively has fat switch on." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-05.149428/page-10#post-1775746 source]
 
# "Presence Shift is Presence pull. Tone stack effectively has fat switch on." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-05.149428/page-10#post-1775746 source]
# (about the difference between the "JP Green" and "USA Clean") "JP has less gain and a much larger midrange potentiometer." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-06.149775/page-2#post-1777979 source]
+
# (difference between the "JP Green" and "USA Clean") "JP has less gain and a much larger midrange potentiometer." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-06.149775/page-2#post-1777979 source]
 
# "JP himself gave the models his stamp of approval." [http://forum.fractalaudio.com/threads/i-am-confused-about-the-jp2c.153540/post-1826396 source]
 
# "JP himself gave the models his stamp of approval." [http://forum.fractalaudio.com/threads/i-am-confused-about-the-jp2c.153540/post-1826396 source]
 
# "JP (Green) has less gain (than USA Clean) and a much larger midrange potentiometer." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-06.149775/post-1777979 source]
 
# "JP (Green) has less gain (than USA Clean) and a much larger midrange potentiometer." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-5-06.149775/post-1777979 source]
 
# "Those are great amps. The particular amp used for the models was John Petrucci's personal recording amp. I didn't want to give it back and offered to buy it from him but he wouldn't sell it." [https://www.thegearpage.net/board/index.php?threads/fractal-fm3-reviews-tones-questions.2124913/post-31011638 source]
 
# "Those are great amps. The particular amp used for the models was John Petrucci's personal recording amp. I didn't want to give it back and offered to buy it from him but he wouldn't sell it." [https://www.thegearpage.net/board/index.php?threads/fractal-fm3-reviews-tones-questions.2124913/post-31011638 source]
# "It's not that the Graphic EQ isn't the same, the TAPERS are not the same. On the real amp the controls do virtually nothing until you get near the ends of the range. If you move a slider to, say, 3/4 of its range it does almost nothing. If you were to set the model's slider to the same position you would get significantly more boost. I didn't model the nonlinear slider behavior because IMO it's a design flaw. Graphic EQs should have a nice, linear-in-dB response. Otherwise the graphic EQ is very accurate. The frequency and Q behavior is spot-on. If you have pulled the presence knob on the amp you have to activate the Presence Shift on the model. Otherwise they will sound VERY different. Presence shift gives a much more focused sound. I always use the Presence Shift. You can't compare the amp with a switch engaged to the model without the equivalent switch engaged. Of course it will sound different. The tapers of the other controls should be very close including the Presence and Master Volume. We didn't model the Shred Mode switch because it's just a High Treble boost. Use the High Treble control to dial in the desired amount of high treble. In this case the model is SUPERIOR to the real amp because you can adjust the desired amount of upper treble to your liking rather than being stuck with a fixed amount. JP himself was very impressed with the model and the model was matched to his PERSONAL head that he sent me." [https://forum.fractalaudio.com/threads/real-jp2c-vs-axe-fx-3-sim-comparison.168942/post-2029916 source]</blockquote>
+
# "It's not that the Graphic EQ isn't the same, the TAPERS are not the same. On the real amp the controls do virtually nothing until you get near the ends of the range. If you move a slider to, say, 3/4 of its range it does almost nothing. If you were to set the model's slider to the same position you would get significantly more boost. I didn't model the nonlinear slider behavior because IMO it's a design flaw. Graphic EQs should have a nice, linear-in-dB response. Otherwise the graphic EQ is very accurate. The frequency and Q behavior is spot-on. If you have pulled the presence knob on the amp you have to activate the Presence Shift on the model. Otherwise they will sound VERY different. Presence shift gives a much more focused sound. I always use the Presence Shift. You can't compare the amp with a switch engaged to the model without the equivalent switch engaged. Of course it will sound different. The tapers of the other controls should be very close including the Presence and Master Volume. (...) JP himself was very impressed with the model and the model was matched to his PERSONAL head that he sent me." [https://forum.fractalaudio.com/threads/real-jp2c-vs-axe-fx-3-sim-comparison.168942/post-2029916 source]</blockquote>
 +
# "I thought that Shred mode is the same as the Red mode on the Triaxis which is just a treble boost on the output when, in fact, it's a clean boost on the input similar to a Tube Screamer but without the treble rolloff." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-11-cygnus-firmware-public-beta-8.171486/post-2067465 source]
 +
# (about the fixed internal input drive) "Yellow is 2.9. Red is 5.7." [https://forum.fractalaudio.com/threads/axe-fx-iii-16-00-beta-11-cygnus-firmware-public-beta-8.171486/post-2067603 source]
  
 
==USA JP IIC+ Red==
 
==USA JP IIC+ Red==
 +
 +
==USA JP IIC+ Red Shred==
  
 
==USA JP IIC+ Yellow==
 
==USA JP IIC+ Yellow==
 +
 +
==USA JP IIC+ Yellow Shred==
  
 
==USA LEAD (based on Mesa/Boogie Mark IV)==
 
==USA LEAD (based on Mesa/Boogie Mark IV)==
Line 2,629: Line 2,587:
  
 
Models:
 
Models:
# Rhythm Green
+
* Rhythm Green
# Lead 1 Red (TX-4 board)
+
* Lead 1 Red (TX-4 board)
# Lead 2 Green
+
* Lead 2 Green
# Lead 2 Red
+
* Lead 2 Red
# Lead 2 Yellow
+
* Lead 2 Yellow
  
Drive, Lead Drive, Treble, Middle, Bass, Presence (preamp!), Master, Dynamic Voice (EQ)
+
Drive, Lead Drive, Treble, Middle, Bass, Presence (preamp, on Lead models), Dynamic Voice EQ (not modeled)
  
Fractal Audio:
 
 
# "I used a Triaxis for, shoot, I dunno, over a decade before designing the Axe-Fx. I have two of them. So I'd say I'm pretty familiar with the tones. To my ears (and my measurement equipment), the Axe-Fx models are spot-on."
 
# "I used a Triaxis for, shoot, I dunno, over a decade before designing the Axe-Fx. I have two of them. So I'd say I'm pretty familiar with the tones. To my ears (and my measurement equipment), the Axe-Fx models are spot-on."
 
# "I can nail the sound of my Triaxis now by setting it (Bright) around 9:00 - 10:00." [https://forum.fractalaudio.com/posts/1001906/ source] And: "10 on the Triaxis would be 0 dB on the Bright parameter. Anything below 10 is equivalent to less than noon on the Bright parameter. The "Presence" control on a Triaxis is always a hi cut, it never boosts. The Bright parameter is not an exact match to the Triaxis Presence control though. It is a fixed shelving filter. The Triaxis Presence control is passive so the center frequency changes with the amount of cut. It also changes the load on the plate which distorts the frequency response a bit too. The Presence parameter should be set to 5.00, which is neutral (see the manual for details)."
 
# "I can nail the sound of my Triaxis now by setting it (Bright) around 9:00 - 10:00." [https://forum.fractalaudio.com/posts/1001906/ source] And: "10 on the Triaxis would be 0 dB on the Bright parameter. Anything below 10 is equivalent to less than noon on the Bright parameter. The "Presence" control on a Triaxis is always a hi cut, it never boosts. The Bright parameter is not an exact match to the Triaxis Presence control though. It is a fixed shelving filter. The Triaxis Presence control is passive so the center frequency changes with the amount of cut. It also changes the load on the plate which distorts the frequency response a bit too. The Presence parameter should be set to 5.00, which is neutral (see the manual for details)."
Line 2,649: Line 2,606:
 
# "That's how our reference amps work. They are the later models with the TX4 board (different LD2 Red). When using the LD1 modes the Presence control doesn't do anything and is as if the control were at 10." [https://forum.fractalaudio.com/threads/triaxis-usa-pre-models-inconsistencies-in-controls.156431/post-1865080 source]
 
# "That's how our reference amps work. They are the later models with the TX4 board (different LD2 Red). When using the LD1 modes the Presence control doesn't do anything and is as if the control were at 10." [https://forum.fractalaudio.com/threads/triaxis-usa-pre-models-inconsistencies-in-controls.156431/post-1865080 source]
 
# "The tone stack on a Boogie is pre-distortion. As you increase gain you want less bass into the distortion stages so the idea is you turn the bass down. In later versions of the Boogies (TriAxis for example) they changed the taper so that noon was equivalent to 1 on earlier models because people are reticent to move controls very far from noon for some weird reason." [https://forum.fractalaudio.com/threads/highly-compressed-sound-on-high-gain-amps.169132/post-2032825 source]
 
# "The tone stack on a Boogie is pre-distortion. As you increase gain you want less bass into the distortion stages so the idea is you turn the bass down. In later versions of the Boogies (TriAxis for example) they changed the taper so that noon was equivalent to 1 on earlier models because people are reticent to move controls very far from noon for some weird reason." [https://forum.fractalaudio.com/threads/highly-compressed-sound-on-high-gain-amps.169132/post-2032825 source]
# In Cygnus the models have an authentic Preamp Presence control.  
+
# "Based on the Lead 1 Red mode of a Mesa Triaxis preamp with the TX-4 board."
 +
# In "Cygnus" amp modeling firmware the Lead models have an authentic Preamp Presence control (not in the lead 1 model).
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-usa-pre3-mesa-boogie-triaxis.115478/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-usa-pre3-mesa-boogie-triaxis.115478/ Yek's write-up]
  
 
==USA PRE LD1 RED (TX-4 board)==
 
==USA PRE LD1 RED (TX-4 board)==
 
Fractal Audio:
 
# "Based on the Lead 1 Red mode of a Mesa Triaxis preamp with the TX-4 board."
 
  
 
==USA PRE LD2 GREEN==
 
==USA PRE LD2 GREEN==
Line 2,671: Line 2,626:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
[[Cabinet models list | Cab:]] Mesa 1x10 (Eminence Black Shadow)
 
[[Cabinet models list | Cab:]] Mesa 1x10 (Eminence Black Shadow)
  
Volume, Bass, Mid, Treble, Reverb. Bright and FAT voicings are available through separate inputs or through a switch
+
Volume, Bass, Mid, Treble, Reverb (not modeled). Bright and FAT voicings are available through separate inputs or through a switch
  
 
[http://forum.fractalaudio.com/threads/usa-sub-blues-mesa-boogie-subway-blues.115479/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/usa-sub-blues-mesa-boogie-subway-blues.115479/ Yek's write-up]
Line 2,684: Line 2,639:
  
 
Models:
 
Models:
# Fat switch engaged
+
* Fat switch ON
# Fat switch off
+
* Fat switch OFF
  
Volume, Treble, Bass, Middle, Fat switch, Tremolo, Reverb
+
Volume, Treble, Bass, Middle, Fat switch, Tremolo, Reverb (not modeled)
  
 
[[Cabinet models list | Cab:]] Fender 3x10
 
[[Cabinet models list | Cab:]] Fender 3x10
  
Fractal Audio:
 
 
# "The model is based on the custom version which has higher plate voltages which causes more overdrive on the power tubes."
 
# "The model is based on the custom version which has higher plate voltages which causes more overdrive on the power tubes."
  
Line 2,698: Line 2,652:
 
==VIBRA-KING FAT==
 
==VIBRA-KING FAT==
  
==VIBRATO LUX (based on '62/'63 brownface Fender Vibrolux, 6G11)==
+
==VIBRATO LUX (based on 1962/1963 brownface Fender Vibrolux, 6G11)==
  
 
[[file:vibrolux.jpg|300px]]
 
[[file:vibrolux.jpg|300px]]
  
 
Model:
 
Model:
# Bright channel (turn off Bright for Normal channel)
+
* Bright channel (Normal channel: Bright OFF)
  
 
[[Cabinet models list | Cab:]] Fender 2x10 or 1x12
 
[[Cabinet models list | Cab:]] Fender 2x10 or 1x12
  
Vibrato channel: Volume, Bass, Treble, Vibrato
+
Vibrato channel: Volume, Bass, Treble, Vibrato (not modeled)
  
Fractal Audio:
 
 
# "Early Dire Straits tone is a Vibrolux (Vibrato Lux model). The Vibrato Lux model is based on the same model and year amp used on the eponymous album. There's a cab in there too." [https://forum.fractalaudio.com/posts/1111550/ source]
 
# "Early Dire Straits tone is a Vibrolux (Vibrato Lux model). The Vibrato Lux model is based on the same model and year amp used on the eponymous album. There's a cab in there too." [https://forum.fractalaudio.com/posts/1111550/ source]
 
# "It's a Vibrolux. That IR is from my personal 1962 Vibrolux. This is the amp used on Dire Straits eponymous album." [https://forum.fractalaudio.com/threads/vibrolux-g3-with-the-new-ir-is-just-ridiculous.97866/#post-1174387 source]
 
# "It's a Vibrolux. That IR is from my personal 1962 Vibrolux. This is the amp used on Dire Straits eponymous album." [https://forum.fractalaudio.com/threads/vibrolux-g3-with-the-new-ir-is-just-ridiculous.97866/#post-1174387 source]
Line 2,720: Line 2,673:
 
[[image:vibroverb.jpg|300px]]
 
[[image:vibroverb.jpg|300px]]
  
Model:
+
Models:
# old model, ported from the Axe-Fx Ultra
+
* Vibrato Verb: old model ported from the Axe-Fx Ultra
 +
* Vibrato Verb AA: based on 1964 blackface Vibroverb with AA763 circuit (Cliff's own Vibroverb)
 +
* Vibrato Verb AB: based on AB763 circuit
 +
* Vibrato Verb Custom: based on Custom Reissue)
  
 
[[Cabinet models list | Cab:]] Fender 1x15 (Jensen C15N, JBL D130, Eminence)
 
[[Cabinet models list | Cab:]] Fender 1x15 (Jensen C15N, JBL D130, Eminence)
  
Volume, Bass, Treble, Bright switch, Reverb, Tremolo
+
Volume, Bass, Treble, Bright switch, Reverb (not modeled), Tremolo
  
Fractal Audio:
 
 
# "The Transformer Matching value for the CS model is based on the output transformer in the actual amp. Legend has it that SRV used a Bassman transformer which would lead to significant overmatching. To replicate this increase Xfrmr Match to around 1.8."
 
# "The Transformer Matching value for the CS model is based on the output transformer in the actual amp. Legend has it that SRV used a Bassman transformer which would lead to significant overmatching. To replicate this increase Xfrmr Match to around 1.8."
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-vibrato-verb-fender-vibroverb.115734/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-vibrato-verb-fender-vibroverb.115734/ Yek's write-up]
  
==VIBRATO VERB AA (based on '64 blackface Fender Vibroverb, AA763)==
+
==VIBRATO VERB AA (based on 1964 blackface Fender Vibroverb, AA763)==
 
 
Model:
 
# single model (Cliff's personal amp)
 
 
 
Notes: see above
 
  
 
==VIBRATO VERB AB (based on Fender Vibroverb, AB763)==
 
==VIBRATO VERB AB (based on Fender Vibroverb, AB763)==
 
Model:
 
# single model
 
 
Notes: see above
 
  
 
==VIBRATO VERB CUSTOM (based on Fender Vibroverb Custom Reissue)==
 
==VIBRATO VERB CUSTOM (based on Fender Vibroverb Custom Reissue)==
 
Model:
 
# single model
 
 
Notes: see above
 
 
Fractal Audio:
 
# "The Transformer Matching value for the CS model is based on the output transformer in the actual amp. Legend has it that SRV used a Bassman transformer which would lead to significant overmatching. To replicate this increase Xfrmr Match to around 1.8."
 
  
 
==WRECKER EXPRESS (based on Trainwreck Express)==
 
==WRECKER EXPRESS (based on Trainwreck Express)==
Line 2,761: Line 2,698:
  
 
Model:
 
Model:
# Wrecker Express: bright switch on original amp in center or top position
+
* Wrecker Express: bright switch on original amp in center or top position
# Wrecker Express Bright: bright switch on original amp in bottom (brightest) position
+
* Wrecker Express Bright: bright switch on original amp in bottom (brightest) position
  
 
Volume, Bas, Mid, Treble, Presence, three-position Bright switch (center: off, top: clarity and sparkle, bottom: jangly highs)
 
Volume, Bas, Mid, Treble, Presence, three-position Bright switch (center: off, top: clarity and sparkle, bottom: jangly highs)
  
Fractal Audio:
 
 
# "The secret to a Trainwreck is the output transformer. The impedance ratio is about twice that of other amps. I.e. typical 50W Marshall has a primary impedance of about 3200 ohms. A Trainwreck is about 6500 ohms. The causes the power tubes to clip much sooner." [https://forum.fractalaudio.com/posts/1116254/ source]
 
# "The secret to a Trainwreck is the output transformer. The impedance ratio is about twice that of other amps. I.e. typical 50W Marshall has a primary impedance of about 3200 ohms. A Trainwreck is about 6500 ohms. The causes the power tubes to clip much sooner." [https://forum.fractalaudio.com/posts/1116254/ source]
 
# "Real Trainwrecks are very spitty amps. This is because the last stage heavily overdrives the phase inverter. 7.02 is faithful to the actual amps whereas previous firmwares were more idealized. As was indicated in the release notes you can dial out this behavior by decreasing the PI Bias Shift. If you set it to zero it will be like 6.xx." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-7-02-firmware-release.125625/page-17#post-1498318 source]
 
# "Real Trainwrecks are very spitty amps. This is because the last stage heavily overdrives the phase inverter. 7.02 is faithful to the actual amps whereas previous firmwares were more idealized. As was indicated in the release notes you can dial out this behavior by decreasing the PI Bias Shift. If you set it to zero it will be like 6.xx." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-7-02-firmware-release.125625/page-17#post-1498318 source]
Line 2,773: Line 2,709:
 
# "The real amp is a nasty thing. Very spitty as one would expect given the lack of a grid stopper resistor between the last triode stage and the PI." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841549 source]
 
# "The real amp is a nasty thing. Very spitty as one would expect given the lack of a grid stopper resistor between the last triode stage and the PI." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841549 source]
 
# "Got out the reference amp and it sounds the same. For all the hoopla surrounding Trainwrecks they're actually pretty bad designs. Tons of blocking distortion in the PI. If you don't want all that blocking distortion turn down PI Bias Excursion." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/page-4#post-1841474 source]
 
# "Got out the reference amp and it sounds the same. For all the hoopla surrounding Trainwrecks they're actually pretty bad designs. Tons of blocking distortion in the PI. If you don't want all that blocking distortion turn down PI Bias Excursion." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/page-4#post-1841474 source]
# "Wow, turning down PI Bias Excursion yields the ultimate Trainwreck. Sounds much better than the real amp. I also adjusted the Preamp Bias so it wasn't so off-center." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/page-4#post-1841480 source]
+
# "Turning down PI Bias Excursion yields the ultimate Trainwreck. Sounds much better than the real amp. I also adjusted the Preamp Bias so it wasn't so off-center." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/page-4#post-1841480 source]
 
# "The only difference (between the two Express models) is the Bright Cap. An Express (at least mine) has a three-position switch: Off, 100 pF, 500 pF. The amp block only supports Off and On and I figured people wouldn't know the fine details so a separate model seemed the easiest solution. Of course you can vary the Bright Cap but you'd have to know that the real amp has two caps, etc." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-10-01.154923/post-1843572 source]
 
# "The only difference (between the two Express models) is the Bright Cap. An Express (at least mine) has a three-position switch: Off, 100 pF, 500 pF. The amp block only supports Off and On and I figured people wouldn't know the fine details so a separate model seemed the easiest solution. Of course you can vary the Bright Cap but you'd have to know that the real amp has two caps, etc." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-10-01.154923/post-1843572 source]
  
Line 2,785: Line 2,721:
  
 
Model:
 
Model:
# Wrecker Liverpool: bright switch on original amp in center or top position
+
* Liverpool: bright switch on original amp in center or top position
# Wrecker Liverpool Bright: bright switch on original amp in bottom (brightest) position
+
* Liverpool Bright: bright switch on original amp in bottom (brightest) position
  
 
Volume, Bas, Mid, Treble, Presence, three-position Bright switch (center: off, top: clarity and sparkle, bottom: jangly highs)
 
Volume, Bas, Mid, Treble, Presence, three-position Bright switch (center: off, top: clarity and sparkle, bottom: jangly highs)
  
Fractal Audio:
 
 
# "The secret to a Trainwreck is the output transformer. The impedance ratio is about twice that of other amps. I.e. typical 50W Marshall has a primary impedance of about 3200 ohms. A Trainwreck is about 6500 ohms. The causes the power tubes to clip much sooner." [https://forum.fractalaudio.com/posts/1116254/ source]
 
# "The secret to a Trainwreck is the output transformer. The impedance ratio is about twice that of other amps. I.e. typical 50W Marshall has a primary impedance of about 3200 ohms. A Trainwreck is about 6500 ohms. The causes the power tubes to clip much sooner." [https://forum.fractalaudio.com/posts/1116254/ source]
 
# "Just because a power amp is "Class A" doesn't mean it can't have negative feedback. True that the majority do not but this particular amp has quite a bit of NF." [http://forum.fractalaudio.com/threads/wrecker-liverpool-neg-feedback-bug.116224/#post-1389082 source]
 
# "Just because a power amp is "Class A" doesn't mean it can't have negative feedback. True that the majority do not but this particular amp has quite a bit of NF." [http://forum.fractalaudio.com/threads/wrecker-liverpool-neg-feedback-bug.116224/#post-1389082 source]
Line 2,798: Line 2,733:
 
# (about the Tech Note) "Applies to the Liverpool because the preamp is almost identical to the Express." [https://forum.fractalaudio.com/threads/trainwreck-express-tweaks.154796/post-1842967 source]
 
# (about the Tech Note) "Applies to the Liverpool because the preamp is almost identical to the Express." [https://forum.fractalaudio.com/threads/trainwreck-express-tweaks.154796/post-1842967 source]
 
# "The reason they clean up when you back off the volume is because the OT is so overmatched. It's about twice the optimum value." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841485 source]
 
# "The reason they clean up when you back off the volume is because the OT is so overmatched. It's about twice the optimum value." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841485 source]
# "Wow, turning down PI Bias Excursion yields the ultimate Trainwreck. Sounds much better than the real amp. I also adjusted the Preamp Bias so it wasn't so off-center." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/page-4#post-1841480 source]
+
# "Turning down PI Bias Excursion yields the ultimate Trainwreck. Sounds much better than the real amp. I also adjusted the Preamp Bias so it wasn't so off-center." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/page-4#post-1841480 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-wrecker-liverpool-trainwreck-liverpool.115741/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-wrecker-liverpool-trainwreck-liverpool.115741/ Yek's write-up]
  
==WRECKER LIVERPOOL BRIGHT (based on Trainwreck Liverpool)==
+
==WRECKER LIVERPOOL BRIGHT==
  
 
==WRECKER ROCKET (based on Trainwreck Rocket)==
 
==WRECKER ROCKET (based on Trainwreck Rocket)==
Line 2,809: Line 2,744:
  
 
Model:
 
Model:
# single channel
+
* Single channel
  
 
Volume, Treble, Bass, Cut
 
Volume, Treble, Bass, Cut
  
Fractal Audio:
 
 
# "The secret to a Trainwreck is the output transformer. The impedance ratio is about twice that of other amps. I.e. typical 50W Marshall has a primary impedance of about 3200 ohms. A Trainwreck is about 6500 ohms. The causes the power tubes to clip much sooner." [https://forum.fractalaudio.com/posts/1116254/ source]
 
# "The secret to a Trainwreck is the output transformer. The impedance ratio is about twice that of other amps. I.e. typical 50W Marshall has a primary impedance of about 3200 ohms. A Trainwreck is about 6500 ohms. The causes the power tubes to clip much sooner." [https://forum.fractalaudio.com/posts/1116254/ source]
 
# "The Rocket has a different preamp (than the Express) with the tone stack before the PI. This reduces the signal level substantially and lessens the amount of blocking distortion." [https://forum.fractalaudio.com/threads/trainwreck-express-tweaks.154796/post-1842967 source]
 
# "The Rocket has a different preamp (than the Express) with the tone stack before the PI. This reduces the signal level substantially and lessens the amount of blocking distortion." [https://forum.fractalaudio.com/threads/trainwreck-express-tweaks.154796/post-1842967 source]
 
# "The reason they clean up when you back off the volume is because the OT is so overmatched. It's about twice the optimum value." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841485 source]
 
# "The reason they clean up when you back off the volume is because the OT is so overmatched. It's about twice the optimum value." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/post-1841485 source]
 +
# "Real Trainwrecks are very spitty amps. This is because the last stage heavily overdrives the phase inverter. 7.02 is faithful to the actual amps whereas previous firmwares were more idealized. As was indicated in the release notes you can dial out this behavior by decreasing the PI Bias Shift. If you set it to zero it will be like 6.xx." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-7-02-firmware-release.125625/page-17#post-1498318 source]
 +
# "Turning down PI Bias Excursion yields the ultimate Trainwreck. Sounds much better than the real amp. I also adjusted the Preamp Bias so it wasn't so off-center." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-10-00-public-beta-2.154782/page-4#post-1841480 source]
  
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-wrecker-rocket-trainwreck-rocket.114726/ Yek's write-up]
 
[http://forum.fractalaudio.com/threads/fractal-audio-amp-models-wrecker-rocket-trainwreck-rocket.114726/ Yek's write-up]

Latest revision as of 09:49, 18 April 2021

This page lists all amp models in Fractal Audio’s Axe-Fx III and FM processors, with brief additional information (based on "Cygnus" amp modeling). Depending on the firmware, some models may not yet be available on every device. The information also partly applies to the previous generation of modelers (Axe-Fx II series and AX8). Many of the amp models are featured in Factory presets.

Yek's Guide to the Fractal Audio Amplifier Models provides in-depth information about most amp models.

Contents

1959SLP JUMPED (based on 100W Marshall Super Lead Plexi 1959 reissue)

SLP.png

Models:

  • Normal and Treble channels jumpered
  • Normal channel
  • Treble (High) channel

Cab: Marshall 4x12 (G12M, G12H)

Volume Normal, Volume Treble, Bass, Middle, Treble, Presence

  1. (about the Plexi model in the Standard/Ultra): "One of the first mods people make to real 'Plexi' Marshalls is to "clip the bright cap". The bright cap varied over the years, supposedly depending on what was lying around in the shop. The model defaults to the bright cap in the circuit. If you turn off Bright you're effectively clipping the bright cap. The bright cap in Marshalls can be very bright and harsh. However, if you crank the Master you might find the extra brightness helps compensate for the power amp getting darker."
  2. (about fizz) "It's the way a Plexi is supposed to sound. That's due to the cathode follower. That raspiness helps it cut through in a mix. I own three of them and they are that fizzy." source
  3. "Don't be afraid to turn the bass all the way down or the treble all the way up. Just like with the actual amp. For example, on the normal channel of a Plexi most people turn the bass way down. Otherwise it's too flubby."
  4. "The old one (Plexi 100w model) has a 2.7K cathode resistor on the first stage, the new one (1959SLP) has an 820 ohm." source
  5. "I based the SLP on using it with G12H(55) speakers which have a resonance of 55 Hz. When mounted in a typical cab the resonance will be in the low 70s. There is no right or wrong. Whatever sounds best." source
  6. "My settings for a "typical" Plexi tone are Bass: 2, Mid: 8, Treble 7.5. Adjust Presence to taste." source
  7. "What you are hearing is output transformer high frequency resonance. Old Plexis didn't do this because they had good transformers. New transformers are crappy and resonate at the cutoff frequency because they are underdamped. This causes a raspy, fizzy texture to the distortion. The transformer resonance is adjustable but the parameter isn't exposed to the user. When you turn it up you get that same squishy rasp that you are hearing. For the Plexis I have the damping set to flat with no resonance because that's how our vintage Plexis measure. Our 50W is a little underdamped but people complain about raspy high frequencies so I erred on the safe side." source
  8. "When modding Marshalls for higher gain sometimes the modder will decrease the input frequency response to reduce noise and fizziness. You can do this by reducing the high-cut frequency in the input EQ. Or you can use a high-shelf filter which is a little more subtle. Another technique is to put a capacitor across the second-to-last triode stage. This is the "Triode 1 Plate Freq" parameter. Reduce this to around 2 kHz to start which is typical of amps like an SLO100, etc." source

Yek's write-up

1959SLP NORMAL

1959SLP TREBLE

1987X JUMPED (based on 50W Marshall 1987X reissue)

1987X.png

Models:

  • Normal and Treble channels jumpered
  • Normal channel
  • Treble channel

Cab: Marshall 4x12 (G12M, G12H)

Volume Normal, Volume Treble, Bass, Middle, Treble, Presence

Notes: see 1959SLP

  1. "The 1987x doesn't have the 0.68uF cap on the last triode. Gives it a smoother distortion." source
  2. "Our reference amp has no bright cap. Looks like it was that way from the factory. There are no signs it was removed. The location in the circuit board is empty and the solder joints do not appear to have been disturbed." source

Yek's write-up

1987X NORMAL

1987X TREBLE

5153 100W BLUE (based on EVH 5150-III)

5153.png

Models:

  • 100W amp, Blue channel
  • 100W amp, Green channel
  • 100W amp, Red channel
  • 50W amp, Blue channel

Cab: 5150 4x12 or 2x12 (G12H, G12EVH)

Gain, Low, Mid, High, Volume, Presence, Resonance (only on 50w model)

  1. "IMO, it's a very good amp. The build-quality is great and the design is very good. It is similar to the previous versions but voiced a bit different. Personally, I think all of the 5150's have more gain stages than necessary which just makes for unnecessary failure points but the "OMG, this amp has sooo many toobz it must sound awesome" marketing makes it understandable. It's incredibly heavy though." source
  2. "A 5150 uses a fixed bias with no adjustment. Depending on the tubes used the bias can run from average to cold. The model uses average. Some people like a colder sound. If you prefer your amps biased cold, then reduce the bias parameter to taste." source
  3. "The 50W version has a different input network than the 100W version for that channel. The 50W version has about twice the gain as a result. Otherwise things are pretty similar. You can simulate this using the Input Trim knob." source
  4. "The red channels (of 50w and 100w models) are identical." source
  5. "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit." source
  6. "The 5150 models are absolutely identical to our reference amp." source
  7. "The Normal Gain input has a very low input impedance, about 44K in addition to cutting the gain in half. Use the Input Impedance feature of the Input block to simulate. Try 32K." source
  8. "A 5150's presence control has almost no effect from 0 to 7. After 7 the treble increases rapidly. The taper of the presence control in a 5150 is a log30 IIRC (maybe log10, I'd have to check my notes). If anything it should be linear. Ideally it should be reverse log. Our model uses a reverse log taper which gives a nice, smooth response over the full range. In most cases a reverse log taper would be the ideal taper. However reverse log taper pots are uncommon, difficult to source and cost more. Why they chose a log taper in the 5150 is a mystery. Since the power amp has similarities to a Marshall perhaps Eddie wanted the presence control to behave like his old Marshalls. Another possibility is the designer felt the amp was too bright with all knobs at noon (and a linear taper presence pot) and changed the taper to reduce the brightness." source

Yek's write-up

5153 100W GREEN

5153 100W RED

5153 50W BLUE

59 BASSGUY (based on 1959 Fender Tweed Bassman, 5F6-A)

Bassman.jpg

Models:

  • Bright channel (for the Normal channel: disengage Bright switch)
  • Normal and Bright channels jumpered

Cab: Fender 4x10 (P10R, P10Q)

Volume Normal, Volume Bright, Bass, Middle, Treble, Presence

  1. "There is no "High" channel on a 59 Bassman. There is a Normal and Bright channel. The Bright channel model is selected by turning on the Bright switch. The models are based on the higher gain input (the "1" input). To simulate the lower gain input simply set Input Trim to 0.5." source
  2. "All the Fender models except the 59 Bassman and 5F8 Tweed don't have cathode followers." source
  3. ("Cygnus" amp modeling) "The Bassman was reworked using an original 59 Bassman 5F6-A as a reference. This has a 12AY7 input buffer which has less gain than the reissue which uses a 12AX7A (7025 actually, same thing)."

Yek's write-up

59 BASSGUY JUMPED

5F1 TWEED (based on Fender Tweed Champ, 5F1)

Champ.jpg

Model:

  • Single channel

Cab: Fender 1x8

Volume

  1. "This particular amp exhibits a unique breakup characteristic due to its single-ended design and simple circuit."

Yek's write-up

5F1 TWEED EC (based on Fender EC Vibro-Champ)

EC-Vibro-Champ.jpg

Model:

  • Single channel

Cab: Fender 1x8

Volume, Tremolo

  1. "The circuit is slightly different than the original 5F1. It has cathode bypass caps giving it more gain." source

Yek's write-up

5F8 TWEED (based on Keith Urban's 1959 high-powered Fender Tweed Twin, 5F8-A)

5f8-2.jpg

Model:

  • Normal channel (Bright channel: engage Bright switch)

Cab: Fender 2x12 (P12N, but Keith Urban's cab has Two-Rock speakers)

Volume Bright, Volume Normal, Presence, Middle, Bass, Treble

  1. "Based on a 1959 Fender Twin Amp. This particular model is based on Keith Urban’s “#1”. Thank you Keith for allowing us the use of your prized amplifier."
  2. "All the Fender models except the 59 Bassman and 5F8 Tweed don't have cathode followers." source

Yek's write-up

65 BASSGUY BASS (based on Dweezil Zappa's 1965 blackface Fender Bassman, AB165)

Ab165.png

Models:

  • Bass channel
  • Normal channel

Cab: Fender 2x12 (Oxford)

Volume, Bass, Treble, fixed Presence circuit (Presence should be at 10), Bright switch (Normal channel only)

  1. "Has a pissed-off Marshall vibe to it." source
  2. "The 65 Bassguy was matched to a 65 Bassman that Dweezil sent me. It's a vicious amp that sounds more like a Plexi than a Fender. It's the infamous AB165 circuit which is very crunchy and bright and does not sound like your typical Fender." source
  3. "It's a crazy sounding amp, sounds nothing like your typical Fender. It was modded by Roy Blankenship." source
  4. "The AB165 uses 7025 preamp tubes (which are relabeled 12AX7). The phase inverter, however, is a 12AT7. The secret to the AB165 is the summing stage. It uses a inverting summing amp to sum the Normal and Bass inputs. This stage clips, because of all the local negative feedback, quite hard." source
  5. "It's Dweezil's Blankenship modified Bassman. Dweezil's Bassman has two channels like a regular Bassman. The Normal channel is "normal" and corresponds to the 65 Bassguy Nrml model. The Bass Instrument channel is modified and that's the basis for the new model (Dweezil's B-man). It has a boatload of gain and sounds more like a Plexi than a Fender." source

Yek's write-up

65 BASSGUY NORMAL

6G12 CONCERT (based on 1960 brownface Fender Concert, 6G12)

6G12.jpg

Model:

  • Vibrato channel

Cab: Fender 4x10 (P10R, P10Q, C10R, Oxford)

Volume, Bass, Treble, Presence, Vibrato (not modeled)

  1. "Super 6G4 is a Brownface Fender Super. Concert 6G12 is a Brownface Fender Concert. They are very similar amps and both sound "old". They definitely have that early 60's vibe to them." source

Yek's write-up

6G4 SUPER (based on 1960 brownface Fender Super, 6G4)

6G4.jpg

Model:

  • Vibrato channel

Cab: Fender 2x10 (Jensen P10R, P10Q, Oxford 10K5), Fender 2x12

Volume, Bass, Treble, Presence, Vibrato (not modeled)

  1. "Super 6G4 is a Brownface Fender Super. Concert 6G12 is a Brownface Fender Concert. They are very similar amps and both sound "old". They definitely have that early 60's vibe to them." source

Yek's write-up

AC-20 12AX7 BASS (based on Morgan AC20 Deluxe)

Morgan.jpg

Models:

  • 12AX7 Bass
  • 12AX7 Treble
  • EF86 Bass
  • EF86 Treble

Cab: Morgan 1x12 (Alnico Gold, G12H)

Volume, Cut, Sun/Moon switch (= Bright switch), Brilliance switch (= Bass Cut), power scaling (not modeled), EF86/12AX7 switch

  1. "The AC-20 model is based on the amp with the power scaling at maximum power which effectively disables it (and sounds best IMO)." source
  2. "The AC-20 has power scaling. The Axe-Fx II does not model the power scaling circuit as there is no point in that." source
  3. "As with the real amp I dial in quite a bit of Hi-Cut." source
  4. "I think an AC-20 does the Vox thing better than Vox." source
  5. "AC-30's have a poorly designed cathode follower. The bias point is totally wrong and crushes one side of the signal considerably. IMO either the cathode resistor should be 100K or the plate resistor of the preceding stage should be higher, 200K. The clipping is extremely asymmetric. Too much IMO. A little asymmetry is good because it warms things up. Too much causes excessive even-order harmonics which makes things fuzzy and indistinct. The clipping is so asymmetric on an AC-30 that it's almost a half-wave rectifier. You can tweak this by adjusting the Preamp Bias point and/or lowering the Cathode Follower Compression. Or you can lower the Harmonics value which reduces the asymmetric distortion. The downside of that is that it then overdrives the phase inverter causing blocking distortion from excessive bias excursion. Another thing to try is to increase the Grid Clipping value which will add a little headroom. Start with the Bias point. AC-30's are very sensitive to the tube type and part tolerances. A tiny change in the bias point can make a big difference. The default bias point is based on Mullard ECC83 tubes. I prefer the AC-20 because it doesn't have a cathode follower so doesn't suffer from these problems. The cathode follower in an AC-30 doesn't even do all that much. Normally you use a cathode follower to preset a low-impedance source to the tone stack but the tone stack in an AC-30 doesn't present that great of a load anyways." source
  6. "One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion." source
  7. "The Sun/Moon equals the Bright Switch. The Bass/Treble switch would be different amp models. So AC20 EF86 Bass model would be the Bass/Treble switch in the Bass position, the switch on the back in EF86 position and then the Bright switch on the model is the Sun/Moon switch on the amp." source
  8. "So I was testing the next beta and selected the AC-20. Was hearing a lot of ghost notes compared to the old algorithm (in the debug build I can select between algorithms with a hidden parameter) and figured that couldn't be right. Hooked up the real AC-20 and, sure enough, ghost notes galore at the same settings." source
  9. "Our reference amp is a head with matching 1x12 cab." source
  10. "The normal channel on a Vox would be closest to the Morgan. The Brilliant channel is a "Top Boost" which means it has a tone stack and a significant midrange cut. The normal channel has no tone stack. You can't compare a a Morgan AC20 to the Brilliant channel of an AC30 and declare that one sounds better than the other. Totally different preamps and, therefore, different sound. Personally I think the AC20 is a better amp. Better made, better quality components, much better transformers. If you want that chimey AC30 sound you put an EQ before it and suck out some mids." source

Yek's write-up

AC-20 12AX7 TREBLE

AC-20 EF86 BASS

AC-20 EF86 TREBLE

ANGLE SEVERE 1 (based on Engl Savage 120)

Savage.png

Models:

  • Lead channel, Contour switch OFF (boosts lower midrange around 500 Hz)
  • Lead channel, Contour switch ON (boosts from 1200 Hz and cuts lower midrange)

Cab: Engl 4x12 (V30, V60)

Gain (input sensitivity), Lead (degree of distortion), Lead Boost switch, Contour switch, Bass, Middle, Treble, Rough/Smooth switch (not modeled), Master, Presence, Depth Boost switch

  1. "From noon and up it's a presence boost, from noon down it's a presence cut." source
  2. "(...) Engl Savage presence network which reduces negative feedback as the control is turned down causing an increase in volume." source

Yek's write-up

ANGLE SEVERE 2

ARCHEAN (based on 100W PRS Archon)

Archon.jpg

Models:

  • Archean: Lead channel with Bright switch OFF
  • Archean Bright: Lead channel with Bright switch ON
  • Archean Clean: Clean channel

Master, Bass, Middle, Treble, Bright switch, Volume, Depth, Presence, Output Power (not modeled)

  1. "You have to crank the MV on the real amp. The preamp is very "dry" so to get the juices flowing the power amp needs to be working hard. This also smooths out that funky midrange." source
  2. "I think part of the reason the real Archon needs to be cranked is because the power supply is too stiff. It's got six (!!!) big caps filtering the B+. That's too much filtering IMO unless you're playing at arena volumes. If I were to make a modification to the amp it would be a switch to disconnect four of those caps so the supply is more bouncy at moderate volumes. Maybe also a tube rectifier to add some more sponge." source
  3. Based on 100W amp source

Yek's write-up

ARCHEAN BRIGHT

ARCHEAN CLEAN

ATOMICA HIGH (based on Cameron Atomica)

Atomica.jpg

Models:

  • Low gain input
  • High gain input

Cab: cabinet with G12H speakers

Thump, Presence, Bass, Middle, Treble, Master, Gain, Edge (not modeled), 3-way Gain Voice switch

  1. "The Atomica can tolerate high MV because it is a "Jose-style MV". The Jose-style MV imparts a very high source resistance to the tone stack which causes much more insertion loss and therefore lower drive level into the power amp." source
  2. "Cameron amps are basically modified Marshalls. The Atomica is essentially a slightly modified JCM800 with a Jose-style zener clipper." source
  3. (fuzzy tone with Bright on) "That's the way those amps sound with the bright switch on. It's due to the location of the drive control. Turn down the Preamp Bias Excursion to reduce it. The problem with those "Mid Stage Drive" designs using a Plexi drive network is that if you bypass the drive pot with a cap (bright cap) you also bypass any grid stoppage and the next stage goes into blocking distortion very easily. There's essentially a straight shot into the grid for all the high frequencies. Friedman probably realized this and that's why there's no bright cap on the BE as the BE is very similar to the Atomica." source

Yek's write-up

ATOMICA LOW

BAND-COMMANDER (based on 1968 silverface/blackface Fender Bandmaster, AB763)

Bandmaster.jpg

Model:

  • Vibrato channel

Cab: Fender 2x12

Vibrato channel: Volume, Bright switch, Treble, Bass, Tremolo

  1. "The vibrato channel is loaded down by the vibrato circuit. The normal channel isn't. You can probably get close using the vibrato channel model by increasing the MV trim." source

Yek's write-up

BIG HAIR (custom model)

Logo small.png

Custom Fractal Audio model

  1. "It was a total guess. I just tuned it by ear. It's just my idea of what 80's hair metal might sound like." source
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

BLANKENSHIP LEEDS (based on Dweezil Zappa's Blankenship Leeds 21)

Blankenship.jpg

Model:

  • Single channel

Cab: 2x10, 1x12, 2x12 (G12M)

Volume, Tone, Tremolo

  1. "Based on a Blankenship Leeds which is a boutique version of an 18W Marshall. This particular amp is known for sounding “big” despite being relatively low power."
  2. "The model was matched to Dweezil's amp. He loaned it to me because it was one of his favorite amps and I can see why. It's a really cool amp."
  3. "The amp has no hi-cut circuit therefore the control won't do anything. Neither will the Depth."
  4. "18W Marshalls are kind of a bad design. The phase inverter drives the power tubes too hard which results in excessive bias excursion.” source

Yek's write-up

BLUDOJAI CLEAN (based on Bludotone Ojai)

Ojai.png

Models:

  • Clean channel with PAB (Pre-Amp Bypass) OFF
  • Overdrive channel with PAB OFF
  • Overdrive channel with PAB ON

Cab: Bludotone 1x12, 2x12 (G12-65, EVM)

Volume, Overdrive Level, Treble, Middle, Bass, Master, Presence. Switches: Bright, Mid, Rock/Jazz. Footswitchable Pre-Amp Bypass (PAB) which bypasses the tonestack (Bass / Middle / Treble)

Forum member AustinBuddy, owner of the original amp:

  1. "The model is of a 100w 6L6 BludoDrive Ojai by Bludotone amps, using Fractal's MIMIC process. The Ojai has the same schematic as the famous "Tan" boutique amp played by Robben Ford. It pairs well with the factory Rumble 4X12 cabinet. On the Ojai there is a bright cap on the Master Volume. As you turn the MV down, it will get thinner. This makes the MV even more sensitive than usual since there’s another interaction going on. To get the most range out of this amp, experiment with Master Volume and listen how it interacts with low or high Drive settings, similar to the real amp. The breakup range/tones between is wide and dynamic and can respond to your playing dynamics, getting crunchier as you dig in and cleaner as you play lighter. The amp's Bass response should increase noticeably as you turn up the Master Volume from the default MV position. Pair it with a G12-65H speaker. Cab Pack 17 has many choices (full disclosure, I produced 5 of the 6 Cabs in that Cab Pack). The BludoMix Cab in factory firmware is a 1x12 Alnico dual port cab, and will sound good but perhaps a tad darker (great for Jazz) on clean sounds than the G12-65H will. Now, if you like, put a Zen drive in front on the BludoClean amp....or a boost...and listen to how that clean channel wakes up fast for grittier leads and touch-responsiveness. For BludoLead, take the Lead default amp values. Put the Master Volume on 5. Put drive at 4-5 and Overdrive at 4-5, and experiment with the tone stack swaps above. If you want the amp to feedback effortlessly on a note, raise the overdrive setting higher combined with the gain, provided you have sufficient volume coming out your speakers to hit your guitar pickups in a reinforcing loop, it will do it! Throw a boost or Zen drive on that, if you like..." source
  1. "The tone stack in the PAB models is a neutral tone stack which is the same as lifting the ground. Put all knobs at noon if you want authentic." source
  2. "The tone stack in the PAB models is a neutral tone stack which is the same as lifting the ground. Put all knobs at noon if you want authentic. Unlike the amp, however, you can actually adjust the tone controls and something will happen. In the virtual realm we can have lifted tone stacks that actually still work." source
  3. "Pre, mid and post aren't absolute locations. They're relative to the particular model. In the Lead model there is a buffer and then three gain stages IIRC. Pre means the tone stack is before the three gain stage in this case. Changing it to Mid would put it after the first gain stage. In the Clean model there is only a buffer and one gain stage. In this case mid means the stack is between the buffer and gain stage. Changing it to pre would put it before the buffer. Since there are only two tubes pre would indicate before the buffer which is not what we want. In the PAB model there is no tone stack so I put a neutral tone stack after the gain stages (with a fixed attenuation after the buffer). This allows the most flexibility. The HRM case the neutral tone stack is replaced by a Marshall tone stack." source

Yek's write-up

BLUDOJAI LEAD

Formerly: BLUDOJAI LEAD 1

BLUDOJAI LEAD PAB

Formerly: BLUDOJAI LEAD 2

BOGFISH BROWN (based on Bogner Fish preamp)

Fish.png

Models:

  • Strato channel
  • Brown channel

Master, Gain, Bass, Mid, Treble

  1. "I used the power amp models from the XTC." source

Yek's write-up

BOGFISH STRATO

BRIT 800 (based on 50W Marshall JCM 800 2204)

2203.png

Model:

  • Single channel

Cab: Marshall 4x12 (G12M, G12H, G12-75, V30)

Pre-Amp, Bass, Middle, Treble, Presence, Master

  1. "It is a very bright model. However, it sounds exactly like the amp it was based on. If it is too bright, you can adjust the various tone controls and parameters to reduce the brightness to your tastes. They are designed to be run loud and the brightness decreases as the MV is increased. The sound of 80's hair metal for sure." source
  2. "The saturation switch switches in a zener diode clipping stage right before the tone stack. This is the Arrendondo Mod." source
  3. "Rips my head off here. I have to turn the presence way down. Check the MV. Too high and will get muddy." source
  4. "That "interference" is due to all the treble peaking used in the design. JCM800s have quite a bit of treble boost. When you first attack the string the note is unpitched. It's basically a brief explosion of noise. The treble boosting amplifies the upper frequencies of this noise burst which is what you hear. However, when you playing in a loud mix that treble boosting helps the sound cut. Modern designs use more carefully crafted treble boosting to retain the cut but tame some of the harshness of the attack. This is accomplished typically by putting a capacitor in parallel with the plate resistor(s) which rolls off around a few kHz. This preserves the treble boost in the upper midrange but softens the attack. I believe the SLO100 was one of the first amps to do this. You can see this in the Axe-Fx II as your Triode Freq parameters. You can soften the JCM800 attack by lowering the Triode Freq values. Most modern hi-gain designs use some form of HF rolloff like this. Another reason is that JCM800s use relatively low amounts of negative feedback (which is why they're so loud). This causes a treble boost in the power amp. Increase the Damping parameter to increase the negative feedback." source
  5. "Those amps are all designed to get their character from power amp distortion. If you don't push the power amp all you are hearing is the preamp which is voiced to be trebly. The power amp then compresses the highs and the sound gets fatter." source
  6. "It's a vertical input Canada export version. I went through several before settling on this one as it was the best sounding by far." source
  7. (about moving Master volume to the post phase inverter) "It's called PPI MV or the "Lar-Mar Mod"." source
  8. "At low MV the source resistance into the PI is low which raises the highpass frequency due to the coupling cap and raises the lowpass frequency due to the Miller capacitance and snubber. As you increase the MV the source resistance increases which decreases both of these things. As you keep raising the MV the source resistance then starts to decrease as you get above 50% of the pot value." source
  9. "Some of them are really dull. We have two 50 watters. One is a Canadian export with bat-handle switches and sounds glorious. All nasty and spitty and full of "artifacts". The other is a "regular" one with the rocker switches. It sounds like it has a blanket over it in comparison. Our model is based on the Canadian one. Oh, and I should add that someone removed the bright cap from the Canadian one. Probably because it's so nasty with it in. I installed a new one to bring it back to it's original glory. The key to JCM800's is to crank the MV to overcome the brightness of the preamp." source
  10. "Our reference amp had the bright cap removed by a previous owner. I put it back in. I like it on, even with a bright guitar." source
  11. "When modding Marshalls for higher gain sometimes the modder will decrease the input frequency response to reduce noise and fizziness. You can do this by reducing the high-cut frequency in the input EQ. Or you can use a high-shelf filter which is a little more subtle. Another technique is to put a capacitor across the second-to-last triode stage. This is the "Triode 1 Plate Freq" parameter. Reduce this to around 2 kHz to start which is typical of amps like an SLO100, etc." source
  12. "The reference amp used for our model is a Canadian Export version (with the "bat handle" power switches). We have two JCM800s and this particular amp sounds way better than the regular one with the rocker type power switches. It's not as harsh with a warmer high end." source
  13. "We have two of them. One sounds amazing, the other not so much. The model is based, naturally, on the amazing sounding one." source

Yek's write-up

BRIT 800 #34 (custom model, based on Marshall JCM 800 with Santiago #34 modifications)

Logo small.png

Custom Fractal Audio model

Notes: see Brit 800

  1. "Based on the “Santiago #34” modifications."
  2. "The Brit 800 #34 does a better Slash than the AFS100 IMO. The AFS100 models are based on the actual amp but I think my version of #34 sounds more like AFD. I based the model on information I've collected over the years about the mods that were done." source
  3. "The Brit 800 #34 has a ton of treble boost and will squeal with certain guitars and/or certain IRs and/or certain types of amplification. Nature of the beast. No other amp has anywhere near the amount of treble boost. The AFD100 amp that Marshall produced years later (that was supposed to be a #34 copy) has nowhere near the amount of treble boost and has a huge snubber cap on the PI (which rolls off the treble). My gut tells me that they did this because they feared there would be too many reports of pickup squeal (or the amps would be too unstable at high gain)." source

Yek's write-up

BRIT 800 MOD (custom model, based on modded Marshall JCM 800)

Logo small.png

Custom Fractal Audio model

Notes: see Brit 800

  1. "Based on popular modified Marshall JCM800. These mods make the amp “heavier” and less strident."

Yek's write-up

BRIT AFS100 1 (based on Marshall AFD100SCE)

AFD.jpg

Models:

  • Amp in mode "#34"
  • Amp in mode "AFD"

Cab: Marshall 4x12 (V30)

Gain, Bass, Middle, Treble, Presence, Master, #34/AFD switch

  1. "I have an actual Slash signature model and spent a lot of time measuring, listening and comparing." source
  2. "The Brit 800 #34 does a better Slash than the AFS100 IMO. The AFS100 models are based on the actual amp but I think my version of #34 sounds more like AFD. I based the model on information I've collected over the years about the mods that were done." source
  3. "The Brit 800 #34 has a ton of treble boost and will squeal with certain guitars and/or certain IRs and/or certain types of amplification. Nature of the beast. No other amp has anywhere near the amount of treble boost. The AFD100 amp that Marshall produced years later (that was supposed to be a #34 copy) has nowhere near the amount of treble boost and has a huge snubber cap on the PI (which rolls off the treble). My gut tells me that they did this because they feared there would be too many reports of pickup squeal (or the amps would be too unstable at high gain)." source
  4. "The amount of treble peaking needed for an amp at a given drive is highly dependent on the guitar. For example my guess is that the AFD100 was designed around a Les Paul. With my Suhr it's much too bright because that's a very bright guitar. So one of the first things I do with the AFS100 model is turn down the bright cap a bit." source

Yek's write-up

BRIT AFS100 2

BRIT BROWN (custom "Brown Sound" model)

Logo small.png

Custom Fractal Audio model

Cab: Marshall 4x12 (G12M, G12H, G12-EVH, V30, JBL D120)

Cliff:

  1. "The Brit Brown was built by ear." source
  2. "Brit Brown is my personal take on what the ultimate "Brown" plexi should sound like. It's based on a 100W SLP with Arredondo mods and a few little voicing tweaks." source
  3. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  4. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  5. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

BRIT JM45 (based on Marshall JTM 45)

JTM.png

Models:

  • Treble (High) channel
  • Normal and Bright channels jumpered

Cab: Marshall 4x12 (G12M, G12H)

Volume Normal, Volume High Treble, Bass, Middle, Treble, Presence

  1. "They had no Master Volumes so people rarely got the Drive past 3.00 since it would melt your face. Without the specter of having your skin flayed off as is afforded by a model of the amp, the temptation is to turn the Drive way up. When you do this the low notes get very muddy. Single notes can form an almost perfect square wave which will sound like a synthesizer." source
  2. "Our reference amp has a 100 pF bright cap. Many JTM45s did not but I think they sound better with one. A JTM45 with a bright cap is similar to a Superlead. If you want the Channel 1 sound with an Axe-Fx use the Brit JM45 Jump model and turn the Treble Drive knob all the way down." source
  3. "When modding Marshalls for higher gain sometimes the modder will decrease the input frequency response to reduce noise and fizziness. You can do this by reducing the high-cut frequency in the input EQ. Or you can use a high-shelf filter which is a little more subtle. Another technique is to put a capacitor across the second-to-last triode stage. This is the "Triode 1 Plate Freq" parameter. Reduce this to around 2 kHz to start which is typical of amps like an SLO100, etc." source
  4. "The very first models used a 5881, after that KT66 then EL34." source

Yek's write-up

BRIT JM45 JUMPED

BRIT JVM OD1 GREEN (based on Marshall JVM410H)

Jvm.png

Models:

  • OD1 Green
  • OD1 Orange
  • OD1 Red
  • OD2 Green
  • OD2 Orange
  • OD2 Red

Cab: Marshall 4x12 (V30 and G12H)

Master, Bass, Middle, Treble, Gain, Presence, Resonance, Reverb (not modeled)

  1. "IMO, the reason the JVM sounds good is the plate cap on the second-to-last triode. That smooths out the tone considerably. The second-to-last triode is associated with "Triode 1 Freq" in the advanced parameters. You can adjust this to simulate adding a cap to the plate. The other thing that helps the tone is the 220K plate resistor on the last triode. This shifts the bias point down vs. a "classic" Marshall. Unfortunately the bias points aren't exposed to the user." source
  2. "The JVM has a huge plate resistor on the cathode follower, the JS does not." source
  3. (about OD 1 Orange and Red compression):
    • "Real amp does this. Poor cathode follower design."
    • (why doesn't this happen with the Green channel) "Because the Green channel only has one tone stack hanging off the cathode follower."
    • (why doesn't this happen with the OD2 channels) "OD1 has a different tone stack. The gains are the same. The models are very accurate." source

Yek's write-up

BRIT JVM OD1 ORANGE

BRIT JVM OD1 RED

BRIT JVM OD2 GREEN

BRIT JVM OD2 ORANGE

BRIT JVM OD2 RED

BRIT PRE (based on Marshall JMP-1 preamp)

Cliff JMP-1.jpg

Model:

  • OD channel

Volume, Gain, Bass, Mid, Treble, Presence, Bass Shift (not modeled)

  1. "The two channels have preset tone stacks. Then there is a digitally controlled 4-band graphic EQ which is the B/M/T and Presence. This technique gets around the problem of trying to digitally control a tone stack. The Triaxis uses LDRs in place of potentiometers. The Soldano X-99 uses motorized pots. Both techniques being expensive. So the JMP-1 uses a fixed tone stack and then a digitally controlled graphic EQ. The Axe-Fx model of the JMP-1 is "better" in the sense that the tone controls control the tone stack rather than a graphic EQ. You then have the separate graphic EQ to further tailor the sound. What I didn't do, and why people probably feel the model differs, is "normalize" the tone controls so that with B/M/T at noon the tone stacks match. On the Axe-Fx you might need to set the Bass to 3, Mid to 7, etc. to get the tone to match. I just used a standard Marshall tone stack whereas the JMP-1 uses a standard Marshall tone stack but the pots are replaced with fixed resistors but those values don't necessarily correspond to the pots at noon." source
  2. "The JMP-1 tone controls have more range than the actual preamp. The preamp has about +/- 8 dB for each tone control while the model has the standard +/- 12 dB."

Yek's write-up

BRIT SILVER (based on 100W Lerxst Omega / Marshall 2555 Silver Jubilee)

Lerxst.jpg

Model:

  • Lead channel

Cab: Marshall 4x12 (V30)

Presence, Bass, Middle, Treble, Gain, Master

  1. "Our reference amp for the Silver Jubilee is actually not a Silver Jubilee. It's a Lerxst Omega that Alex Lifeson gave me." source

Yek's write-up

BRIT SUPER (based on Marshall AFD100)

AFD.jpg

Model:

  • Marshall AFD100 in AFD mode

Notes: see Brit AFS100

  1. "Brit Super model is based on the Marshall AFD100." source

BUDDAH DUOMASTER (based on Budda Twinmaster)

Logo small.png

Model:

  • Single channel

Cab: 1x15 Budda Phat 15 or 1x12 Budda Phat 12

Bass, Treble, Volume

  1. "I bought a Budda Twinmaster, pulled it apart and traced the circuit since I couldn't find a schematic for it anywhere. Funky amp. Paraphase phase inverter. Weird Bridge-T sorta tone stack. I'm convinced the feedback is connected to the wrong node but I quadruple-checked and my schematic is definitely correct. I think it was probably a mistake but then they said "Hmmm, but it sounds good so don't fix it"." source

Formerley: BUTTERY, custom Fractal Audio model

  1. "I did the Buttery model by ear. I listened to some clips of Buddas (Matchbox 20... excellent!) and tweaked the model until I thought it sounded like one. Screwed around a little with the tube bias points until it had the right balance of harmonics and called it a day."
  2. "It's still the "ear tuned" version. I bought the amp but because it was so popular as-is I didn't dare change it." source
  3. "Buttery is a virtual amp model that was created by ear. There is no physical, real amp that exists upon which it was based. It's like the FAS models. They exist solely in the virtual world. They all still benefit from the Quantum stuff though as they use the same underlying algorithms for the tube modeling. The amp model, regardless of how accurate it is (and it's probably grossly inaccurate as I never compared it to any actual amp) is very popular and that's why it was never matched to any real amp." source
  4. "Yeah, Buttery was a legacy model from the first Axe-Fx." source

Yek's write-up

CA3+ CLEAN (based on Custom Audio Amplifiers 3+ SE preamp)

CAE.png

Models:

  • Clean channel
  • Rhythm channel
  • Lead channel

Gain, Bass, Middle, Treble, Master, Bright switch. Active tube EQ: Treble and Bass

  1. "The CA3+SE model is basically an OD100." source
  2. "An OD100 is the head version of a CAE 3+."
  3. "That's a "James" tone-stack. You can find simulations on-line but typically you would get close using shelving filters with frequencies of 100 and 1000 Hz." source

Yek's write-up

CA3+ LEAD

CA3+ RHYTHM

CAMERON CCV 1A (based on Cameron CCV-100)

Ccv.jpg

Models:

  • (1A) Channel 1, less gain
  • (1B) Channel 1, more gain
  • (2A) Channel 2, Bright1 switch left, Bright2 switch left, Gain Style switch left
  • (2B) Channel 2, Bright1 switch left, Bright2 switch right, Gain Style switch left
  • (2C) Channel 2, Bright1 switch left, Bright2 switch left, Gain Style switch right
  • (2D) Channel 2, Bright1 switch left, Bright2 switch right, Gain Style switch right (source)

Channel 1: Punch (= Resonance / Depth), Presence, Master, Bass, Middle, Treble and Gain, 3-way Voicing switch (resonance), 3-way Dark switch (presence), 3-way Gain Style switch (“Jose Master” gain/clipping), 3-way Bright switch (less noticeable at higher gain settings)

Channel 2: Punch (= Resonance / Depth), Presence, Solo Master, Master, Bass, Middle, Treble, two Gain controls, 3-way Gain Style switch, two Bright switches, Drive switch

The 2C and 2D models have lower output because of the Sat switch position.

  1. "The amp was modeled with the Voicing switch in the middle position. The "Dark" switch is the Negative feedback control. Set Negative Feedback to 3.6 to reproduce the switch in the middle position. Set it to 9.8 to reproduce the switch in the right position. 5.0 for left position (default). The amp has a dozen switches and, frankly, there isn't a lot of difference between some of the settings. The Drive switch sounds virtually identical whether left or right. I don't like it in the middle." source
  2. (about the Drive knob) "Our reference amp has a linear taper pot so the behavior is very abrupt. The model matches the amp extremely accurately (as do all G3 models)." source
  3. "It's a bit of a quirky amp and kind of a one-trick pony but, man, what a trick." source
  4. "Yes, it's actually not a very high gain amp. The topology is very similar to a JCM800." source
  5. "The key to the CCV sound is the Sat Switch." source
  6. "Camerons have linear taper MV and you need it with them because the signal level into the power amp is very low due to the Jose topology." source

Yek's write-up

CAMERON CCV 1B

CAMERON CCV 2A

CAMERON CCV 2B

CAMERON CCV 2C

CAMERON CCV 2D

CAPT HOOK 1A (based on Hook Captain 34)

Capt34.jpg

Models:

  • (1A) Channel 1, EQ Bypass switch OFF, Boost switch OFF
  • (1B) Channel 1, EQ Bypass switch engaged (no Bass / Middle / Treble), Boost switch ON
  • (2A) Channel 2, Edge switch OFF
  • (2B) Channel 2, Edge switch ON
  • (3A) Channel 3, Edge switch OFF
  • (3B) Channel 3, Edge switch ON

Cab: Hook 2x12 or 4x12 (V30, G12H, G12-65, WGS)

Channel 1: Gain (with Pull function), Level, Bass, Mid, Treble, Boost switch (not modeled), EQ bypass switch, Bright switch. Shared: Presence and Balls

Channels 2 and 3: Gain, Level, Bass, Mid, Treble, Boost switch, Edge switch (changes tone stack). Shared: Presence and Balls

  1. "This amp uses a mu follower which yields a complex distortion with smooth decay. To simulate the Boost switch use the Boost switch in the amp block as it has the same amount of gain."​ source
  2. "A mu follower is similar to a cascode configuration except the output is off the cathode instead of the plate. So the output impedance is lower." source
  3. (mimic Pull Gain on clean channel) "Just set the Tonestack Type to Hook Clean 2." source
  4. "The Capt. Hook's "thing" is that it's basically a JCM800 with the cathode follower replaced by a mu-follower. A mu-follower doesn't compress and distort like a cathode follower does. This results in the amp sounding more open and smoother." source
  5. "The Hook Clean 1 is a Fender style tonestack which has a lot more insertion loss than the others." source
  6. "The Hook uses a "mu follower" instead of a cathode follower. Cathode followers have low output impedance but distort quite easily. Mu followers address some of the problems of cathode followers." source

Yek's write-up

CAPT HOOK 1B

CAPT HOOK 2A

CAPT HOOK 2B

CAPT HOOK 3A

CAPT HOOK 3B

CAR ROAMER (based on Carr Rambler)

Rambler.jpg

Model:

  • Single channel

Cab: Carr 1x12 (Eminence Elsinore)

Volume, Treble, Middle, Bass, Pentode/Triode (not modeled), Reverb (not modeled), Tremolo

  1. "It's basically a Deluxe Reverb preamp with a cathode bias 6L6 power amp and no negative feedback. Sort of a Fender-meets-Vox thing." source

Yek's write-up

CAROL-ANN OD-2 (based on Carol-Ann OD-2)

Od2.jpg

Model:

  • Overdrive channel

Master, Pre Gain, Drive, Bass, Middle, Treble, Presence, Sparkle (not modeled), Shift switch (not modeled)

  1. "CAs are definitely dark amps. Sound great though." source

Alan Phillips:

  1. "In the real world the OD2 is very very fussy on speaker choice too. The real world speakers of choice are EVM12L in a 1x12 rear ported and 2x12 with Celestion Classic Lead 80's. I found the 12L emulation did a pretty good job. Some of the others sounded so artificial with that model. Like a Rockman. Coupled with the right cab the emulated model does a good job of representing the basic tonal signature of the amp".
  2. "It's not a competitive model, it's a live demo of an OD2 as tweaked by me. Damn sight better than sound clips for auditioning to guys that haven't got the ability to get to a Dealer. Clearly it doesn't give you the full experience of the full amp, but is a good tonal taster. I repaired a Soldano SLO for him one day and when he came over my house to pick it up we just decided it would be a good idea to put a CA model in there. Having the actual builder involved kind of closes the loop fully. I'm happy to endorse that model because I put a lot of hours testing it and putting together a ton of technical information, fourier analysis graphs, frequency response graphs, schematics etc that would make validation of a mathematical model much easier. In reality even though the power amp and the preamp are modeled the pre-amp got the most effort. As I said in another thread, I tuned that by putting the axe in to the actual power amp of an OD2 and running that side by side with a full OD2. The final tweaks were made like that using parametric eq blocks that were hard coded in to the model. You could call that the icing on the cake and basically put the same level of tuning into the model as I do with a actual OD2. The only difference was I was using a GUI, not resistors and capacitors."
  3. "The OD2 and to some degree the OD3 uses HRM style gain staging with a Plexi PI and power amp. Thats common knowledge, I've talked about it in depth many times. I really liked the idea of driving the tonestack from a common cathode stage as opposed to a cathode follower like a Marshall because it got rid of some of the artifacts I don't like with say a JCM-800. Yes that's something that Dumble came up with that I have to give him major props for. I wanted an amp that would have a little more gain than a JCM-800 but with the character of a Plexi without any fizz or harsh upper mid/lower treble frequencies. Remember this was BEFORE anyone had even degooped or documented a Bluesmaster style circuit and the only thing Shad was building was his post count at AmpGarage asking about Dumble circuits. I do find it amazing it took other guys years to catch on with moving the pots to the front. It does require a bit more thought than just moving the pots as the ranges of those trimmers Dumble used is impractical when used as front panel controls (which they were not really intended to be). I do also agree with you that from a pure tone standpoint having nothing on the front panel is always going to be better. The JB100 model is basically an OD2 with the entire OD circuit on the board with predefined filters made up of quality components without adjustment through fragile trimmers. The OD2 was never designed to be put side by side in a Dumble clone fest in some guys living room with everyone playing their best Ford licks, it was designed to be used on stage for guys who played in cover/blues/wedding/classic rock bands. The seperate eq and the tube driven effects loop were added for that situation. I have always tried to avoid that association as much as possible because the average Dumble lover is typically looking for a particular set of tones that may or may not be found in this amp. Early customer interaction with guys like yourself made me want to make sure people knew it was not a tonal clone of a Dumble to avoid returns/misunderstandings. The OD-2 is not the best amp for those tones, I totally agree with you, but a Dumble or clone doesn't really do fast dampened power chords like the OD-2 will do either. On the other hand, it is much more suited for blues and classic rock, not the Ford/Carlton thing. Bear in mind that its function and tone that the average player is looking for, not a particular design architecture. The fact I did use an HRM style circuit obviously (and unfortunately) placed me in the Dumble category. However, 2500 amps later its not really seen that way any more as the CA's have always had their own thing going on tonally that is very much more in a modified Marshall vein. The newer models like the Triptik 2 have absolutely nothing in common with any Dumble, not even a common cathode driven tonestack. For anyone that has played a number of real Dumbles, there is a certain thing (I hear it more in the clean channel) that is uniquely his signature. There's a certain swirl to the clean tone that is always present in his amps. However the amp doesn't overdrive anywhere close to like what I like when pushed hard. For me I would rather focus on that tone in a Plexi Marshall, but who knows what the original guy he modified this for wanted. All of this hopefully explains why I have always shied away from the Dumble comparison thing, I was truly and honestly never trying to clone a Dumble." source

Yek's write-up

CAROL-ANN TRIPTIK CLASSIC (based on Carol-Ann Triptik)

Triptik.jpg

Models:

  • Clean channel
  • Classic channel
  • Modern channel

Cab: Carol-Ann 1x12 (Scholz Classic)

Input Level, Drive on channels 2 and 3, Bass, Middle, Treble, Presence, Master, Classic/Modern voicing switching

  1. "This TripTik is badass. Dumble meets Marshall with a sprinkle of 5150 power amp." source
  2. "I think what people like about this amp is the same reason people like the BE/HBE. These amps share the same aggressive low-cut on the input and then add bass back in the power amp. This gives clear bass response without getting flubby."
  3. (speaker) "It's a Scholz Classic." source
  4. "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit." source
  5. "CAs are definitely dark amps. Sound great though." source

Alan Phillips from Carol-Ann:

  1. (Classic mode): "On the real amp, you would set the Input level at 2 O'clock and the Gain at 1 to 2 O'clock to get a great classic rock rhythm tone. It's not overly different in character to the modern setting, less gain and less low end essentially."
  2. "It does classic rock extremely well and has one of the best clean channels I've ever designed." source

Yek's write-up

CAROL-ANN TRIPTIK CLEAN

CAROL-ANN TRIPTIK MODERN

CAROL-ANN TUCANA CLEAN (based on Carol-Ann Tucana 3)

Tucana.jpg

Models:

  • Clean channel
  • Lead channel

Input Level, Bass, Mid, Treble, Gain (Overdrive channels), Master (all channels), Presence

  1. "One of the best amps in the world IMO. I have a Dumble and a Trainwreck and various other boutique amps and the Tucana is better than all of them." source
  2. "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit." source
  3. "CAs are definitely dark amps. Sound great though." source

Carol-Ann:

  1. "Now I can only speak for the actual amp, but my preference of speaker is a Celestion Creamback 65, though I gig these regularly with a 2x12 with Celestion T75's. Its pretty forgiving on speakers compared with some models. The foot controller and bias monitor are two of the wonderful features of the actual amp, but are both moot in the model......unless Cliff wants to model the effects of real world mains power fluctuations from place to place, but the 'green zone' of the bias monitor is 62-65% plate idle dissipation power and it measures and compensates for plate voltage and screen power , which means the real amp runs best at a slightly cooler bias. The bias monitor just allows you to set that consistently from venue to venue regardless of the main power." source
  2. "It's very very difficult for anyone to get a bad tone out of the real amp. It's designed that way, the range and limits on the controls, even the biasmon system makes it difficult for even a very inexperienced player to FU. The real amp has a more British overtone to it due to the fact I am British and I designed it. The gain staging, overdrive voicing and output stage are night and day to ANYTHING Mesa, any owner of the real amp would attest to that." source
  3. "The Tuc 3 is very very tolerant of most cabs and speakers, unlike say the OD2. I feel people need to approach this model very simply. Don't mess with extended parameters, basically don't try and redesign it. Use a reliable Celestion based cabinet model. I have a fantastic 4x12 with 2 old greenbacks and two old v30s that is the best cab I've played the real amp through. In actual levels of gain with the two adjustable gain controls, the amp has a maximum gain level very similar to the Triptik, the setting of these two controls with respect to each other is critical." source
  4. "Real world, it has the same amount of actual gain as the Triptik. Way more than most people would need for recording or live playing. Input gain on 10 o clock, gain on 2 o clock is a 70s /80s lead tone, put the input level up to 2 o click and it's a very sustained lead tone or a very modern heavy rhythm tone." source
  5. "You don't need to crank the real amp to get a ton of overdrive. I actually designed the original for myself and I play in a rock cover band. There's nowhere I would ever be able to get the amp to the point of pushing the power tubes in to overdrive. You gain stage a design based on its application. For a design that needs a lot of overdrive at a low volume, you do most of that and the harmonic makeup in the preamp. The Tucana falls in to this category. The master volumes in a 500 seat club rarely get above 10 O Clock on the real amp and at that point there's still tons of clean headroom left. Of course the power amp adds to the harmonic content, but it adds very little overdrive. Another interesting point to note is that the Tucana has a high pass filter in the power amp feedback loop, which gives you a nice tight low end because the bass is subjected to more gain. For an amp designed to be pushed hard in to power tube overdrive, this should be omitted as all bets are off in the feedback loop when you hit the rails. In other words that filter requires headroom to function properly, as does the presence control of any amp where it's a component of the feedback loop." source

Yek's write-up

CAROL-ANN TUCANA LEAD

CITRUS A30 CLEAN (based on Orange AD30HTC)

Ad30.jpg

Models:

  • Clean channel
  • Dirty channel

Cab: Orange 2x12 (V30)

Gain, Master, Bass, Middle, Treble

Yek's write-up

CITRUS A30 DIRTY

CITRUS BASS 200 (based on Orange AD200B bass amp)

Orangebass.jpg

Model:

  • Single channel

Cab: Orange bass cab

Volume, Gain, Bass, Middle, Treble

Yek's write-up

CITRUS RV50 (based on Orange Rockerverb 50 MK II)

Rockerverb50.jpg

Model:

  • Dirty channel

Cab: Orange 4x12 (V30)

Dirty channel: Volume, Gain, Treble, Middle, Bass, Reverb

  1. "The model is based on a MKII." source
  2. "The power amp in a Rockerverb has very little negative feedback so it will boost the highs more than most power amps." source
  3. "It's not a super high gain amp. It's called a Rockerverb not a Metalverb. It's only got four gain stages and there's significant padding between stages." source

Yek's write-up

CITRUS TERRIER (based on Orange Tiny Terror)

Tinyterror.jpg

Model:

  • Single channel

Cab: Orange 1x12 or 2x12 (G12H)

Volume, Gain, Tone (High Cut), 7w/15w switch (not modeled)

  1. "The actual amp has no tone stack and a single tone control. The tone control is actually a high cut control in the power amp and is therefore replicated by the Hi Cut parameter."
  2. "It's inaudible when clean." source

Yek's write-up

CLASS-A 15W TB (based on Vox AC15 Top Boost)

Ac15.jpg

Model:

  • Top Boost channel

Cab: Vox 1x12 (G12M, Alnico)

Volume, Cut, Bass, Treble

Yek's write-up

CLASS-A 30W (based on Vox AC30 Hand-Wired head)

Ac30.jpg

Models:

  • AC-30: Normal channel of AC30HW
  • AC-30 Bright: Normal channel, Brilliance input
  • AC-30 Hot: Top Boost channel of AC30HW, in "Hot" mode (no Bass / Treble)
  • AC-30 TB: Top Boost channel of AC30HW, in "Cool" mode

Cab: Vox 2x12 (Alnico, G12M)

Volume, Bright switch (Normal channel), Treble/Bass (Top Boost channel), Hot/Cool switch (Top Boost channel), Tone Cut, Master

  1. "Note that the particular AC-30 used for the model has this scratchy high end. (...) It's a hand-wired version and that can lead to this type of sound as the parasitics cause boosting of the very high frequencies when the amp is driven hard." source
  2. "I intentionally limited the midrange notch since, IMO, it's a design flaw in that tone stack. But you can recover that behavior by setting the Mid control fully CCW. Modern AC30's don't have this flaw. They use a Fender-style tone stack with a fixed mid resistor."
  3. "The bright cap value is normalized to a Drive pot of 1M. An AC30 has a 500K pot so the value will read out as half the actual value. IOW, it's displaying 60 pF which is equivalent to 120 pF." source
  4. "The Hot model models the AC-30HW model set to Hot. This bypasses the EQ for more gain. For authenticity, leave all tone controls at noon."
  5. "AC30's have no negative feedback on the power amp. This means the output voltage follows the speaker impedance. Therefore you get a boost at the low frequency resonance of the speaker which causes the low end to get loose when you crank it." source
  6. "AC-30's have a poorly designed cathode follower. The bias point is totally wrong and crushes one side of the signal considerably. IMO either the cathode resistor should be 100K or the plate resistor of the preceding stage should be higher, 200K. The clipping is extremely asymmetric. Too much IMO. A little asymmetry is good because it warms things up. Too much causes excessive even-order harmonics which makes things fuzzy and indistinct. The clipping is so asymmetric on an AC-30 that it's almost a half-wave rectifier. You can tweak this by adjusting the Preamp Bias point and/or lowering the Cathode Follower Compression. Or you can lower the Harmonics value which reduces the asymmetric distortion. The downside of that is that it then overdrives the phase inverter causing blocking distortion from excessive bias excursion. Another thing to try is to increase the Grid Clipping value which will add a little headroom. Start with the Bias point. AC-30's are very sensitive to the tube type and part tolerances. A tiny change in the bias point can make a big difference. The default bias point is based on Mullard ECC83 tubes. I prefer the AC-20 because it doesn't have a cathode follower so doesn't suffer from these problems. The cathode follower in an AC-30 doesn't even do all that much. Normally you use a cathode follower to preset a low-impedance source to the tone stack but the tone stack in an AC-30 doesn't present that great of a load anyways." source
  7. "The reference AC30 is an AC30HWHD." source
  8. "Our Vox models are based on a fairly new AC30HWHD head. The model matches that particular amp very well. Will it match an AC30 from a different era exactly? Probably not." source
  9. "The normal channel on a Vox would be closest to the Morgan. The Brilliant channel is a "Top Boost" which means it has a tone stack and a significant midrange cut. The normal channel has no tone stack. You can't compare a a Morgan AC20 to the Brilliant channel of an AC30 and declare that one sounds better than the other. Totally different preamps and, therefore, different sound. Personally I think the AC20 is a better amp. Better made, better quality components, much better transformers. If you want that chimey AC30 sound you put an EQ before it and suck out some mids." source

Yek's write-up

CLASS-A 30W BRIGHT

CLASS-A 30W HOT

CLASS-A 30W TB

COMET 60 (based on Komet 60)

Komet60.jpg

Model:

  • Single channel

Volume, Treble, Middle, Bass, Presence, Hi Cut, Touch Response switch: Fast/Gradual (not modeled)

  1. "The Komet is definitely a unique amp. Sort of like a Fender preamp into a Marshall power amp. Unique tone stack." source

Yek's write-up

COMET CONCOURSE (based on Komet Concorde)

Kometconcorde.jpg

Model:

  • Single channel

Volume, Treble, Middle, Bass, Presence, Hi Cut, Touch Response switch: Fast/Gradual (not modeled)

  1. "The Komet is definitely a unique amp. Sort of like a Fender preamp into a Marshall power amp. Unique tone stack." source

Yek's write-up

CORNFED M50 (based on Cornford MK50 II)

Cornford.png

Formerly: CORNCOB

Model:

  • Overdrive channel

Cab: Cornford 4x12 (V30)

Gain, Overdrive, Bass, Middle (500Hz), Treble, Master, Presence, Resonance

Yek's write-up

DAS METALL (based on Diezel VH4)

Vh4.jpg

Notes: see Dizzy V4

DELUXE TWEED (based on Fender Tweed Deluxe, 5E3)

Deluxe.jpg

Models:

  • Bright input
  • Bright and Normal inputs jumpered

Cab: Fender 1x12 (P12R, C12N, Alnico)

Volume Normal, Volume Bright, Tone

  1. "Deluxe Tweed” amp model based on a Fender 5E3 Deluxe. Note that this amp only has a single tone control. This is modeled by the Treble control in the Axe-Fx II. The Bass and Mid controls are functional and recreate the amp when set to noon. Also note that this amp suffers from extreme blocking distortion at or near maximum gain. This is common in very old designs. As it is virtually unplayable like this, the model uses a somewhat reduced level of grid conduction to lower the amount of blocking distortion and make the amp more playable at high Drive settings."
  2. "The G3 version of the 5E3 Deluxe Tweed model is a hoot. Totally unpredictable, nasty, gnarly and raunchy. I couldn't stop playing it yesterday. Just like the real amp you have to be careful with your volume control and how you approach the amp so that you keep it right on the edge of playability. So cool." source
  3. "The Deluxe Tweed amp model is a 5E3. The 1x12 Deluxe Tweed Mix cab is the IR." source
  4. "Yup, that's the key. Crank the treble almost all the way up." source
  5. "The actual amp has no grid stopper resistor on the second stage and therefore has LOTS of blocking distortion." source
  6. "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven." source
  7. (about fuzzy lows) "That's what those amps do. Always been that way. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. Those are old designs. Simple circuits with minimal frequency shaping. As such there's a lot of bass going into the power amp. That coupled with the resonance magnification of the speaker impedance causes frequencies around the resonance (in the 50-100 Hz region) to distort early. The low E string is 82 Hz so it's right in that zone." source
  8. "When you dime the controls and whack a big chord the sound "goes away" a bit just like the real amp and then comes back a bit later." source
  9. ("Cygnus" amp modeling) "The 5E3 model is now "jumped" so it has both Normal and Bright drives. You can get all sorts of different distortion textures by playing with the two drives in conjunction with the tone control. As with the real amp everything now interacts. One of the beta testers was remarking that his 5E3 clone sounded more "choked" in comparison to the model. I said "I bet your clone has the wrong type of tube in V1. It's supposed to be a 12AY7 but many clones have a 12AX7A in V1." He checked and, sure enough, 12AX7A in V1." source
  10. ("Cygnus" amp modeling) "I've added a non-jumped version of the 5E3 with both volume knobs. Now we can wait for the inevitable "When I turn the Bright Drive all the way down the Normal Drive doesn't do anything" comments." source

Yek's write-up

DELUXE TWEED JUMPED

DELUXE VERB NORMAL (based on blackface Fender Deluxe Reverb, AB763)

Deluxereverb.jpg

Models:

  • Normal channel
  • Vibrato channel

Cab: Fender 1x12 or 2x10 (C12Q, EVM 12L, JBL D120, 2x10, C10N, C10Q, P10R)

Volume, Bass, Treble, Reverb, Vibrato (not modeled)

  1. "A DR is numbered 1-10 so 3 on a DR is around 2.2 on the Axe-Fx. The model is based on the Vibrato input #1 which has more gain than the normal input. To simulate plugging into the #2 jack (which has half the gain) set Input Trim to 0.5." source
  2. "We got our reference Deluxe Reverb out of storage today, hooked it up and measured and compared. Gain measures spot-on and A/B testing sounds identical. With a Suhr Modern guitar with stock pickups both the amp and the model were starting to break up around 3 (which equals 2.2 on the Axe-Fx since the knobs start at zero not one). A Deluxe Reverb breaks up easily since it has 6V6 power tubes. The preamp is virtually identical to a Twin Reverb but 6V6s break up earlier than 6L6s. For a given voltage into the power amp a 6V6 has about 70% of the headroom compared to a 6L6." source
  3. "The values for the Deluxe Reverb model are based on measurements of an actual 65 Deluxe Reverb, not some hypothetical values on some spec sheet." source
  4. (fuzzy lows) "That's what those amps do. Always been that way. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. Those are old designs. Simple circuits with minimal frequency shaping. As such there's a lot of bass going into the power amp. That coupled with the resonance magnification of the speaker impedance causes frequencies around the resonance (in the 50-100 Hz region) to distort early. The low E string is 82 Hz so it's right in that zone." source
  5. "We have two Deluxe Reverbs, a vintage 1965 Deluxe Reverb that the model is based on and a Reissue. The vintage one sounds great, the reissue doesn't quite sound as good. It's biased too cold. The comparison was between the model and the Reissue because the vintage amp is worth a small fortune and I only use that when actually working on models. It stays in climate controlled storage otherwise." source

Yek's write-up

DELUXE VERB VIBRATO

DIRTY SHIRLEY (based on 40W Friedman Dirty Shirley)

Dirtyshirley.jpg

Models:

  • Current version of the amp
  • Earlier version of the amp with different component values, a little more aggressive than the regular model

Cab: Friedman 4x12 (V30, G12M, G12-65, G12H)

Gain, Master, Bass, Middle, Treble, Presence

  1. "If you want more clarity in the low mids (...) reduce Negative Feedback. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. (...) The amp will sound tighter and clearer in the low mids." source
  2. "The design is weird as the negative feedback is taken off the speaker jack. So if you use a 16-ohm speaker you get more feedback (and much more bass) than if you use an 8-ohm speaker. (...) It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit." source
  3. "At first I didn't like it but for some genres it works. The old version (new model) has a 2.2 nF cap on the cathode follower while the newer version has 4.7 nF. The larger cap smooths out the distortion. The cathode bypass cap values are different as well which changes the midrange response." source
  4. "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit." source
  5. "I always lower the negative feedback. Friedman amps are a bit strange because the negative feedback is taken off the speaker jack instead of one of the transformer taps. The matching cabs are 16 ohms but if you use an 8-ohm cab you'll get 30% less feedback." source
  6. ("Cygnus" amp modeling) "Dirty Shirley 1 is actually the latest version of the amp." source
  7. "They are very dark amp when used with the matching 16-ohm cabinet. The feedback is off the speaker jack (don't ask me why, doesn't make sense). This results in a lot of negative feedback at high frequencies which makes the sound dark. The amp is modeled assuming a 16-ohm load. If you use them into an 8-ohm cabinet they're brighter. To simulate this lower the negative feedback by 1/sqrt(2). This results in a negative feedback value of 3." source
  8. "Dirty Shirley 2 is the brighter of the two (has a 2.2nF cathode cap instead of 4.7nF)." source

Yek's write-up

DIRTY SHIRLEY 2

Dirtyshirley.jpg

DIV/13 CJ (based on Divided By 13 CJ 11)

Cj11.jpg

Models:

  • Boost OFF (Volume knob pushed in)
  • Boost ON (Volume knob pulled out)

Cab: Divided by 13 (G12M)

Volume (pull: Boost), Treble, Bass, Master

  1. "It is a bassy amp. Works best with single coils." source
  2. "You increase the LOW CUT FREQ to reduce the fuzziness on bass notes but then it won't sound like the real thing." source

Yek's write-up

DIV/13 CJ BOOST

DIV/13 FT37 HIGH (based on Divided By 13 FTR 37)

Ftr37.jpg

Models:

  • Low: channel 1, Mid Gain Boost OFF
  • High: channel 1, Mid Gain Boost ON

Cab: Divided by 13 (G12H and Alnico)

Volume (pull: Boost), Treble, Bass

Yek's write-up

DIV/13 FT37 LOW

DIZZY V4 BLUE 2 (based on Diezel VH4)

Vh4blue.jpg

Models:

  • Blue faceplate, channel 2 Crunch
  • Blue faceplate, channel 3 Mega
  • Blue faceplate, channel 4 Lead
  • Silver faceplate, channel 2 Crunch
  • Silver faceplate, channel 3 Mega
  • Silver faceplate, channel 4 Lead

Cab: Diezel 4x12 (V30, G12-100)

Gain, Volume, Bass, Mid, Treble, Presence (4kHz), Deep (80Hz), Bright switch (not on channels 3 and 4)

  1. "The reason Diezels compress so much is due to the cathode follower design. You can reduce the compression in the models by lowering the Compression parameter in the Cathode Follower section." source

Yek's write-up

DIZZY V4 BLUE 3

DIZZY V4 BLUE 4

DIZZY V4 SILVER 2

Vh4.jpg

DIZZY V4 SILVER 3

DIZZY V4 SILVER 4

DOUBLE VERB NORMAL (based on 1966 blackface Fender Twin Reverb)

Twin.jpg

Models:

  • Normal: based on 1966 blackface Fender Twin Reverb, tuned by Andy Fuchs, AB763 circuit, Normal channel
  • Vibrato: based on the Vibrato channel of the same amp
  • Silverface: based on the Vibrato channel of a 1971 100 watts “Silverface”

Cab: Fender 2x12 (Jensen C12N, JBL D120, EVM)

Volume, Bass, Middle, Treble, Bright switch, Reverb (not modeled), Vibrato (not modeled)

  1. (make the Twin cleaner) "Reduce MV (or MV Trim). The biggest reason Silverface Twins were cleaner is because the PI had less gain. Reducing the MV or MV Trim will simulate the lower gain." source
  2. (original Double Verb model) "The Twin Reverb that the model is based on breaks up like that. The model is MIMIC'd and is extremely accurate. It's a Blackface Twin which breaks up easy compared to later Twins. Furthermore, as with all models, it is modeled on the "Hi" input. If you don't want it to break up as easy turn Input Trim to 0.5 to simulate using the "Low" input, reduce Input Drive and MV as necessary. You may want to turn the Bright Switch off as well. People who want squeaky clean usually turn the Bright Switch off on these amps. However, you'd be surprised that a Twin isn't nearly as clean as you think. It's just so damn loud that you get the sensation that it's clean because a light touch on the strings creates a lot of volume." source
  3. "The model is extremely accurate and is based on a 1966 Blackface Twin Reverb. Part of the reason the Blackface era are so sought after is because they distort. They are NOT clean amps by any stretch." source
  4. "A Dual Showman with the AB763 circuit has one less gain stage than a Twin Reverb so it will have less gain. There are two gain stages. The Vibrato channel of an AB763 Twin Reverb has three gain stages. An AA769 Dual Showman Reverb on the Vibrato channel will have similar gain as it has three gain stages. The circuit number, i.e. AB763, does not mean that the circuits are identical. It refers to the circa of the design. An AB763 Dual Showman is not the same circuit as an AB763 Twin Reverb." source
  5. "The Super Reverb is really just a 50W version of a Twin Reverb with different speakers." source

Yek's write-up

DOUBLE VERB SILVERFACE (based on 1971 silverface Fender Twin Reverb)

DOUBLE VERB VIBRATO (based on 1966 blackface Fender Twin Reverb)

DWEEZIL'S BASSGUY (based on Dweezil Zappa's 1965 blackface Fender Bassman, AB165)

Ab165.png

Model:

  • Bass channel modded by Blankenship

Cab: Fender 2x12 (Oxford)

Volume, Negative Feedback, fixed Presence circuit (Presence should be at 10)

Notes: see 65 Bassguy

  1. "It's Dweezil's Blankenship modified Bassman. Dweezil's Bassman has two channels like a regular Bassman. The Normal channel is "normal" and corresponds to the 65 Bassguy Nrml model. The Bass Instrument channel is modified and that's the basis for the new model (Dweezil's B-man). It has a boatload of gain and sounds more like a Plexi than a Fender." source
  2. "Just finished matching this modded 65 Bassman that Dweezil sent me. It's a crazy sounding amp, sounds nothing like your typical Fender. It was modded by Roy Blankenship." source
  3. "The 65 Bassguy was matched to a 65 Bassman that Dweezil sent me. It's a vicious amp that sounds more like a Plexi than a Fender. It's the infamous AB165 circuit which is very crunchy and bright and does not sound like your typical Fender." source
  4. "The actual amp has no tone stack so for maximum authenticity all tone controls would be at noon (but don't be afraid to tweak them). In the actual amp the Treble control is re-purposed as a Negative Feedback control. Experiment with different values of Negative Feedback. Lower values are looser." source

Yek's write-up

ENERGYBALL (based on Engl Powerball)

Powerball.jpg

Model:

  • Lead channel

Cab: Engl 4x12 (V30, V60)

Gain, Volume, Bass, Mid-Open, Mid-Focused, Treble, Presence, Punch Depth, Bottom, Open or Focused (boosts 300-500 Hz) mode

Yek's write-up

EURO BLUE (based on Bogner Ecstasy 20th Anniversary)

Ecstasy.png

Models:

  • Blue channel, structure switch: Vintage
  • Blue channel, structure switch: Modern
  • Red channel, structure switch: Vintage
  • Red channel, structure switch: Modern

Cab: Bogner 2x12 or 4x12 (V30)

Gain, Master, Bass, Middle, Treble, Presence, Bright switch, Structure switch (gain reduction), Old/New Style switch (not modeled), Excursion switch, Gain switch, Plexi Mode (not modeled)

  1. "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." source
  2. "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." source
  3. "Our reference amp is a 20th anniversary and N is Bright Off, B1 is 150 pF and B2 is 1000 pF for both channels. The models default to B1. Change the Bright Cap value to 1 nF to emulate B2. Or better yet use your ears to select a value that sounds best." source
  4. (Class A) "Turn up Power Tube Grid Bias. In real life that is tough on tubes as it makes them run very hot." source
  5. "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." source
  6. "Most amps use a linear taper for the treble pot. Bogners use a log taper. So when the knob is at noon on a Bogner it's similar to 8 o'clock on most amps." source

Yek's write-up

EURO BLUE MODERN

EURO RED

EURO RED MODERN

EURO UBER (based on Bogner Uberschall)

Uber.png

Model:

  • High gain channel

Cab: Bogner 4x12 Uberkab (G12-T75 and V30)

Gain, Master, Bass, Middle, Treble, Presence, Depth (only on Twin-Jet Uberschall)

  1. "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." source
  2. "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." source
  3. "The feedback circuit is responsible for the behavior of the Presence and Depth controls. Certain Bogners and Diezels have a unique type of feedback circuit. There are no new parameters and nothing to do except twist the Presence and Depth knobs to your desired tone. Note that an Uberschall doesn't have a Depth knob. The default Depth value when you select the Euro Uber model is equivalent to the amp's fixed depth circuit." source
  4. "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." source
  5. "Most amps use a linear taper for the treble pot. Bogners use a log taper. So when the knob is at noon on a Bogner it's similar to 8 o'clock on most amps." source

Yek's write-up

FAS 6160 (custom model)

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Custom Fractal Audio model

  1. "Based on the PVH 6160 model but more open and less fizzy than the original amp. Also, a virtual choke has replaced the resistor found on the original’s power supply filter. This results in a bouncier feel."
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS BASS (custom model)

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Custom Fractal Audio model

  1. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  2. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  3. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS BROOTALZ (custom model)

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Custom Fractal Audio model

  1. "This amp was an accident. I was working on the Savage model and accidentally used the input stage from an SLO100. So it's the front end of an SLO100 with the back end of a Savage. It's probably an SLO100 power amp too but I'd have to check." source
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source
  5. "Brootalz uses the Engl Savage presence network which reduces negative feedback as the control is turned down causing an increase in volume." source

Yek's write-up

FAS BROWN (custom "Brown Sound" model)

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Custom Fractal Audio model

  1. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  2. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  3. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS CLASS-A (custom model)

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Custom Fractal Audio model

  1. "A “Blackface” preamp into a cathode-biased 6L6 power amp with no negative feedback. This was a happy accident when originally modeling the Carr Rambler in the beta version of this release. Several mistakes were made in the model prior to MIMIC’ing the amp but the model was so well liked that we decided to make it into its own custom amp model."
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS CRUNCH (custom model, based on Marshall Plexi)

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Custom Fractal Audio model

  1. "Our take on the ultimate British-sounding amp. More dynamic and open than a Plexi, but with more gain."
  2. "My take on the ultimate Plexi." source
  3. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  4. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  5. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS EXPRESS (custom model, based on Trainwreck Express)

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Custom Fractal Audio model

Notes: see Wrecker Express

  1. "Based on hypothetical modifications to a Trainwreck Express."
  2. "It has a master volume. That's one of the "mods"." source

FAS HOT ROD (custom model, based on hot-rodded Marshall)

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Custom Fractal Audio model

  1. "FAS Hot Rod is my version of what a modded Marshall should be. I find the BE/HBE a little too boomy and scooped. Bogners are too dark. Splawns don't have enough compression. Etc. So it's my take on a hot-rodded Marshall tone." source
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS LEAD 1 (custom model)

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Custom Fractal Audio model

  1. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  2. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  3. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS LEAD 2 (custom model)

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Custom Fractal Audio model

  1. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  2. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  3. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS MODERN (custom model)

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Custom Fractal Audio model

  1. "This model is my interpretation of the ideal modern metal tone. In the digital realm we are not constrained by the limitations that face tube amp designers so we are free to implement designs that would be nearly impossible with a tube amp. The Axe-Fx II modeling includes a variety of general purpose filters that I can place anywhere in the signal path. So I put some second-order filters in there to tighten up the tone. Implementing second-order filters in a real tube amp is difficult and costly so is rarely seen." source
  2. "It's loosely based on a Recto but with tighter bass." source
  3. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  4. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  5. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source
  6. (about the Mesa Rectifier) "Personally I hate the 39K resistor. It biases the stage much too cold for my tastes. It prevents blocking distortion but there are better ways to do it IMO. The FAS Modern model is similar but biases the stage more towards the center." source

Yek's write-up

FAS MODERN II (custom "metal" model)

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Custom Fractal Audio model

  1. "This is a tighter version of the popular FAS Modern model with a 5150-style bass boost in the tone stack."
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS MODERN III (custom "metal" model)

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Custom Fractal Audio model

  1. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  2. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  3. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS RHYTHM (custom model: Marshall+Mesa)

Logo small.png

Custom Fractal Audio model

  1. "Combines the best features of the British (Marshall) and USA (Mesa) crunch models."
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

Yek's write-up

FAS SKULL CRUSHER (custom model)

Logo small.png

Custom Fractal Audio model

  1. "The nastiest, most brutal amp model to ever escape from the seventh circle."
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source

FAS WRECK (custom model, based on Trainwreck)

Logo small.png

Custom Fractal Audio model

Notes: see Wrecker Express

  1. "Based on the original WRECKER 1 model from the Axe-Fx Ultra."
  2. "The FAS models are idealized and have some of the "design flaws" removed or reduced." source
  3. "If I had my way there would be only FAS models but too many people demand reproductions of existing amps." source
  4. "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Guitar tube amp design was nascent in the 60s and 70s and designers didn't fully understand the impact of overdriving tubes. One of the biggest issues was blocking distortion which is excessive bias excursion. When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. More modern designs employ grid stoppers and smaller coupling capacitors to reduce bias excursion." source
  5. "FAS Wreck model is better than any Trainwreck or Wreck-style amp IMO. All the good bits without the bad stuff." source

Yek's write-up

FOX ODS (based on Fuchs Overdrive Supreme 50)

Fuchs.jpg

Models:

  • ODS: Deep switch OFF, Pre Amp Bypass ON (no tone controls)
  • ODS Deep: Deep switch ON, Pre Amp Bypass ON (no tone controls)

Cab: Fuchs 2x12 (Eminence)

Gain, High (pull: mid boost), Mid (pull: gain boost), Low, Input, Brite switch, Deep switch, Rock/Jazz switch, Master, Accent (presence/edge, not modeled)

  1. "Supposedly a Dumble ODS clone but our reference amp has way more gain than our Dumble." source

Yek's write-up

FOX ODS DEEP

FRIEDMAN BE 2010 (based on Friedman BE, early and recent editions)

BE.jpg

Models before "Cygnus" amp modeling:

  • BE: based on old Marsha model, BE mode
  • BE C45: based on Mark Day's BE-100, C45 switch engaged
  • BE V1: based on Mark Day's BE-100, voice: right position (less mids)
  • BE V2: based on Mark Day's BE-100, voice: left position (more mids)
  • HBE: based on old Marsha model, HBE mode
  • HBE 2018: based on 2018 BE-100, HBE mode
  • HBE 2018 C45: based on 2018 BE-100, HBE mode, C45 switch engaged
  • HBE V1: based on Mark Day's BE-100, HBE mode, voice: right position (less mids)
  • HBE V2: based on Mark Day's BE-100, HBE mode, voice: left position (more mids)

Models in "Cygnus" amp modeling firmware and later:

"Based on latest version of amp. There are now three "Voicings": V1, V2 and V3 corresponding to the three positions of the Voice switch."

  • BE 2010: based on Friedman BE-100 from 2010 (probably the "Marsha" edition)
  • BE C45: recent edition, C45 switch engaged
  • BE V1: recent edition, voice in left position
  • BE V1 Fat: recent edition, voice in left position, FAT switch engaged
  • BE V2: recent edition, voice in middle position (brightest)
  • BE V3: recent edition, voice in right position
  • HBE 2010: based on Friedman BE-100 from 2010 (probably the "Marsha" edition), HBE mode
  • HBE C45: recent edition, C45 switch engaged
  • HBE V1: recent edition, voice in left position
  • HBE V1 Fat: recent edition, voice in left position, FAT switch engaged
  • HBE V2: recent edition, voice in middle position (brightest)
  • HBE V3: recent edition, voice in right position

Cab: Friedman 4x12 (V30 and/or G12M)

Gain, Master, Bass, Middle, Treble, Presence, Bright (clean channel only), plus the Thump control on the Deluxe edition. Switches: FAT, C45 (treble boost), SAT (model: SAT), 3-position Voice switch (changes the top-end response of the dirty channels)

  1. (before Cygnus) "The old model is an original, hand-built "Marsha". It's MUCH darker than Mark's newer BE/HBE. In fact it's so dark and boomy I emailed Dave to make sure the amp was built correctly. Turns out the snubber cap is the wrong value. But even with the snubber cap corrected it's still very dark and boomy which made me question as to whether there are other components that are incorrect. So we decided to redo the model based on Mark's amp which is the amp that was the demo model at Tone Merchants." source
  2. (before Cygnus) "The models are based on two different amps. The V1 and V2 are based on Mark Day's BE100. The other models are based on our original "Marsha". Like most boutique amp makers Friedman's designs have evolved over time with changes to the circuit. The original Marsha we have is dark and bassy with lots of lowpass filtering. The newer amp is brighter and tighter. For now note that V1/V2 refer to the newer amp and represent the position of the Voicing switch." source
  3. "The BE/HBE has a fixed depth circuit that gives a lot of bass boost. The model defaults the Depth to match this." source.
  4. "If you want more clarity in the low mids from the BE/HBE reduce Negative Feedback. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. The mating cab for a BE/HBE is 16 ohms which means lots of feedback. But if you connect the amp to an 8 ohm load there is about 30% less feedback. The amp will sound tighter and clearer in the low mids." source
  5. "The design is weird as the negative feedback is taken off the speaker jack. So if you use a 16-ohm speaker you get more feedback (and much more bass) than if you use an 8-ohm speaker. The model is based on using the matching cab. It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit." source
  6. "I always lower the negative feedback. Friedman amps are a bit strange because the negative feedback is taken off the speaker jack instead of one of the transformer taps. The matching cabs are 16 ohms but if you use an 8-ohm cab you'll get 30% less feedback." source
  7. "C45 is a treble boost on the input. Put a filter block before the amp as follows: Type: Tilt EQ - Freq: 700 Hz - Gain: 4.5 dB" source
  8. Discussion about the Bass control
  9. "Some amps have a fixed depth circuit, e.g. 5153, Freidman BE/HBE, Dirty Shirley, TripTik, Tucana, et. al. In these cases the Depth knob will default to a value that corresponds to the fixed circuit." source
  10. "When you watch a video Dave himself turns the bass way up. Steve Stevens and Jerry Cantrell turn the bass way up too. If I did that with my guitar it would be a muddy mess. Puzzling to me because the BE has a fixed depth circuit and a significant amount of negative feedback so there is quite a bit of bass boost in the power amp as well." source
  11. "The BE has very light power supply filtering like old Plexis." source
  12. (Cygnus) "All the Friedman models are now based on the latest amp. Our reference amp was made in 2018 and has the feedback off the 4-ohm tap." source
  13. (Cygnus) "That's the way the HBE channel sounds. The problem with the design is that the drive control is located between the 3rd and 4th gain stages. Too far back IMO. This causes a lot of distortion and also a lot of bias excursion before the drive control with no way to control it. In most amps the drive control is located after the first stage (input buffer). Some amps have a second drive control, typically called an Overdrive, located further downstream which allows you to balance the pre- and post distortion. One way to deal with it is to decrease the Input Trim and increase the Input Drive. You can also try reducing the Master Bias Excursion but that won't get rid of the pre-drive control distortion. A lot of people like this sound though. It has a certain stringy quality that many people find desirable." source
  14. (Cygnus) "There are now three "Voicings": V1, V2 and V3 corresponding to the three positions of the Voice switch." source

Yek's write-up

FRIEDMAN BE C45

FRIEDMAN BE V1

FRIEDMAN BE V1 FAT

FRIEDMAN BE V2

FRIEDMAN BE V3

FRIEDMAN HBE 2010

FRIEDMAN HBE C45

FRIEDMAN HBE V1

FRIEDMAN HBE V1 FAT

FRIEDMAN HBE V2

FRIEDMAN HBE V3

FRIEDMAN SMALL BOX (based on Friedman Smallbox)

Smallbox.jpg

Model:

  • Channel 2

Cab: Friedman 2x12 (G12M)

Gain, Master, Bass, Middle, Treble, Presence, Bright switch (channel 1 only, not modeled)

  1. "The schematic shows a 2.2 nF coupling cap off the first stage but the actual amp has a 4.7 nF. 2.2 nF would mean less bass. I can only assume the amp was built to the latest specs. If an amp model is "G3'd" it is deadly accurate. I go through the amps and check the values of each component, measure the voltages, compare the frequency response to the model, etc., etc., etc. If the model is too bassy for you then you would find the real amp too bassy, or at least our particular reference model." source
  2. "If you want more clarity in the low mids (...) reduce Negative Feedback. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. (...) The amp will sound tighter and clearer in the low mids." source
  3. "The design is weird as the negative feedback is taken off the speaker jack. So if you use a 16-ohm speaker you get more feedback (and much more bass) than if you use an 8-ohm speaker. (...) It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit." source
  4. "I always lower the negative feedback. Friedman amps are a bit strange because the negative feedback is taken off the speaker jack instead of one of the transformer taps. The matching cabs are 16 ohms but if you use an 8-ohm cab you'll get 30% less feedback." source

Yek's write-up

FRYETTE D60 LESS (based on Fryette Deliverance 60)

Fryette.jpg

Models:

  • "Less" mode
  • "More" mode

Cab: Fryette 4x12 P50E (Fane F70G)

Gain 1, Gain 2, Volume, Bass, Middle, Treble, Presence, Depth, More/Less switch

Yek's write-up

FRYETTE D60 MORE

GIBTONE SCOUT (based on Gibson GA17RVT Scout)

Gibson.jpg

Model:

  • Single channel

Cab: Gibson 1x10

Volume, Tremolo, Reverb (not modeled)

Yek's write-up

HERBIE CH2+ (based on Diezel Herbert)

Herbert.jpg

Models:

  • Channel 2+ (based on Marshall JC800)
  • Channel 2- (based on Marshall Plexi)
  • Channel 3 (based on Diezel VH4)

Cab: Diezel 4x12 (V30, G12-K100)

Gain (not on channel 1), Bass, Middle (1 kHz), Treble, Master, Presence (> 3kHz), Deep (120Hz), Mid-Cut (not modeled), Gain Boost switch (not modeled)

  1. "The reason Diezels compress so much is due to the cathode follower design. You can reduce the compression in the models by lowering the Compression parameter in the Cathode Follower section." source
  2. (to reproduce the Mid Cut function) "Use a Peak EQ filter at 400 Hz with a Q of 1.4. Decrease its Gain until the desired scoop is achieved. Play with the Q to set the width of the scoop." source

Yek's write-up

HERBIE CH2-

HERBIE CH3

HIPOWER BRILLIANT (based on Hiwatt DR103)

Hiwatt.jpg

Models:

  • Normal channel
  • Brilliant channel
  • Normal and Brilliant channels jumpered

Cab: Hiwatt 4x12 (Fane)

Volume, Master, Bass, Middle, Treble, Presence

  1. "I have a 1974 Hiwatt DR-103. The model is based on that. It is one of the Harry Joyce, Hylight era models. Still has the original tubes. Closet find and sounds glorious." source

Yek's write-up

HIPOWER JUMPED

HIPOWER NORMAL

HOT KITTY (based on BadCat Hot Cat 30)

Hotcat.jpg

Model:

  • High gain channel

Cab: BadCat 1x12 (proprietary Celestion)

Gain, Edge (not modeled), Level, Bass, Mid-range switch (not modeled), Treble, Brilliance, Master

  1. "Brilliance is their name for Hi-Cut. I set the Edge control to where I thought it sounded best. It essentially does the same thing as the Bright knob though less precise."
  2. "The amp has a Hi Cut but it's labeled Brilliance. It's wired backwards so turning it CW gets brighter." source
  3. "Those amps make a lot of IMD. The real amp does the same thing but you wouldn't normally use a subwoofer with one." source

Yek's write-up

JMPRE-1 OD1 (based on Marshall JMP-1 preamp)

Cliff JMP-1.jpg

Models:

  • OD1 mode
  • OD1 mode with Bass Shift engaged
  • OD2 mode
  • OD2 with Bass Shift engaged

Volume, Gain, Bass, Mid, Treble, Presence (preamp), Bass shift

  1. "The power amp is based on a typical Marshall 100 watts power amp of the same era."
  2. "The JMP-1 tone controls have more range than the actual preamp. The preamp has about +/- 8 dB for each tone control while the model has the standard +/- 12 dB."
  3. "Actually a JMP-1 is unique in that the tone controls do not interact. Most guitar amps use a passive "tone stack" where the controls interact. The JMP-1 has a fixed passive tone stack followed by an active 4-band EQ. The Axe-Fx tone controls replicate this EQ but the controls have a greater range." source
  4. (Def Leppard) "The amp model you are looking for is "JMPre-1 OD1". Some cabs you might like to try with that amp model: Factory 2 #97 2x12 RECTO V60 57 OH, Factory 2 #995 4x12 UBER V30 57 OFF-AXIS, Factory 2 #530 4x12 BRIT 70s GB 121 I." source

Yek's write-up

JMPRE-1 OD1 BASS SHIFT

JMPRE-1 OD2

JMPRE-1 OD2 BASS SHIFT

JR BLUES (based on Fender Blues Junior)

Bluesjr.jpg

Models:

  • Fat switch OFF
  • Fat switch ON

Cab: Fender 1x12 (Eminence, Jensen C12N, P12R)

Bass, Middle, Treble, Gain, Volume, FAT button (boosts gain and midrange frequencies), Reverb (not modeled)

  1. "The Blues Jr. amp has a fixed presence circuit." source
  2. "They're actually pretty decent little amps and sound great when cranked." source

Yek's write-up

JR BLUES FAT

JS410 CRUNCH ORANGE (based on Marshall JVM410HJS)

Js.jpg

Models:

  • Crunch Orange: based on a JCM 2203
  • Crunch Red: based on a modded JCM 2203
  • Lead Orange: more gain
  • Lead Red: even more gain

Cab: Marshall 4x12 (V30 and G12H)

Volume, Gain, Bass, Middle, Treble, Master, Presence, Resonance, Gate (not modeled), Mid-Shift (around 650hz off and around 500hz on, not modeled)

  1. "Joe said he puts all the tone controls at around 10:00." source
  2. "The JVM has a huge plate resistor on the cathode follower, the JS does not." source

Yek's write-up

JS410 CRUNCH RED

JS410 LEAD ORANGE

JS410 LEAD RED

JAZZ 120 (based on Roland Jazz Chorus 120)

Jc120.jpg

Model:

  • Single model

Cab: Roland 2x12 ("silver" AlNiCo)

Volume, Bass, Mid, Treble, Bright switch. Not modeled: Distortion, Chorus, Reverb

Yek's write-up

LEGEND 100 (based on Carvin Legacy)

Legacy.jpg

Formerley: CALI LEGGY (VL100) and LEGATO 100 (VL300)

Models:

  • Legend 100: lead channel of Carvin VL100 Legacy
  • Legend 100 II: channel 3 of Carvin VL300 Legacy 3

Cab: Carvin 2x12 or 4x12 (V30)

VL100: Presence, Treble (11kHz), Mid (650Hz), Bass (80Hz), Drive, Volume

VL300: Bass, Middle, Treble, Presence, Drive, Volume, Master, Boost (not modeled), Reverb (not modeled), Gain switch (not modeled)

  1. "The thing that makes a Legacy unique is the tone stack. It uses a "James" tone stack which is more like hi-fi tone controls." source
  2. "Adds the "Legato 100" model based on Steve Vai's Legacy 100. This model is unique in that it uses a Baxandall (sometimes called a "James") tone stack. More often used on tube hi-fi gear the controls are less interactive than a typical guitar amp tone stack and impart a different tonal quality." source
  3. "The Legato 100 is based on a one-of-a-kind version owned by a certain Californian guitar player. It is a very dark amp. Part of this is due to the tapers on the tone pots. With everything at noon the tone stack looks like a highshelf with a good amount of high frequency cut. The tone stack is a Baxandall which is more common in hi-fi gear than guitar amps. It lends a unique character to the tone." source
  4. "SV's personal settings are: Drive: 7.5, Bass: 6, Mid: 4, Treble: 8, Presence: 8. I had to increase the Mid control on the model to about 5 to match the amp which indicates the mid pot on the amp was greater than spec. This is not unusual. Typical consumer-grade pots have pretty poor tolerance in both end-to-end resistance and resistance at the midpoint." source
  5. (Cygnus) "Carvin Legacy 100. Legend II is channel 3 from the Legacy 3." source

Yek's write-up

LEGEND 100 II

MATCHBOX CHIEFTAIN 1 (based on Matchless Chieftain)

Chieftain.jpg

Formerly: BOUTIQUE 1 and BOUTIQUE 2

Models:

  • Single channel
  • Boosted for more gain and high-frequency emphasis

Cab: Matchless 2x12 (G12M and G12H)

Volume, Master, Bass, Mid, Treble, Brilliance

  1. "The secret of the Chieftain is the split cathode bias. Most "Class-A" amps use a shared cathode bias but the Chieftain uses separate cathode bias networks which results in less bias shift so there's less fizz." source

Yek's write-up

MATCHBOX CHIEFTAIN 2

MATCHBOX D-30 (based on Matchless DC-30)

Dc30.jpg

Models:

  • Channel 1 (12AX7), Master Volume bypassed
  • Channel 2 (EF86), Master Volume bypassed

Cab: Matchless 2x12 (25w G12M and 30w G12H)

Channel 1: Volume, Bass, Treble, Cut, bypassable Master

Channel 2: Volume, Tone, Cut, bypassable Master

  1. "The DC-30 is basically an AC-30 copy. The voltages are a bit different but the topology is nearly identical. However, IMO, it does sound better. Not sure why. Perhaps the better quality components. AC-30's have kind of crappy OTs." source
  2. (channel 2) "The switch selects the coupling capacitor between the EF86 and the volume pot." source
  3. "Added “Matchbox D-30 EF86” amp model. While the real amp has a six-position Tone switch, the model has a continuously variable tone control. Note that the Tone control is mapped to the Bass control in Ideal mode as the Tone switch is essentially a bass cut control."
  4. “The new DC-30 model may have dethroned the mighty AC-20 as my favorite "Class A" model.” source

Yek's write-up

MATCHBOX D-30 EF86

MR Z HWY 66 (based on Dr. Z Route 66)

Route66.jpg

Model:

  • Single channel

Cab: Dr. Z 2x12 (V30 and G12H)

Volume, Bass, Treble

Yek's write-up

MR Z MZ-38 (based on Dr. Z Maz 38 SR)

Maz38.jpg

Model:

  • Single channel

Cab: Dr. Z 1x12 (G12H)

Volume, Master, Bass, Mid, Treble, Cut, Reverb on some models (not modeled)

  1. "Dr. Z is the quintessential country amp." source"
  2. "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch). Our particular amp says "Humbucker" inside the chassis. Not sure if the difference in the cathode circuit is because Dr. Z likes split cathode for humbucking guitars or what." source

Yek's write-up

MR Z MZ-8 (based on Dr. Z Maz 8)

Maz8.jpg

Model:

  • Single channel

Cab: Dr.Z 1x12 (G12H)

Volume, Master, Bass, Mid, Treble, Cut, Reverb (not modeled), Pentode/Triode switch (not modeled)

  1. "Dr. Z is the quintessential country amp." source

Yek's write-up

NUCLEAR-TONE (based on Swart Atomic Space Tone)

Swart.jpg

Model:

  • Single channel

Cab: Swart 1x12 (Mojotone BV-25m)

Volume, Tone, Reverb (not modeled), Tremolo

  1. "It's unique character comes from the PI. It's a cathodyne phase inverter so it doesn't drive the grids as hard." source
  2. "The real amp is known for it's tremolo so that's why we used the bias trem on the preset. Bias trem works by modulating the power tube grid bias. One of the side-effects is that the effect becomes less pronounced as you play harder which makes it basically "auto ducking". Also since it's modulating the bias it gives an almost Univibe like effect since the phase changes a bit too." source

Yek's write-up

ODS-100 CLEAN (based on Dumble OD Special)

Dumble.jpg

Models:

  • Clean: based on HRM circuit, Clean channel
  • Ford: based on schematics of Robben Ford's #102 Dumble, Overdrive channel, Pre Amp Boost (PAB) OFF
  • Ford PAB: Ford model, PAB ON (bypass the tone controls), Mid switch OFF
  • Ford PAB Mid: Ford model, PAB ON, Mid switch ON
  • HRM: based on HRM circuit, Overdrive channel, Mid switch OFF
  • HRM Mid: based on HRM circuit, Overdrive channel, Mid switch ON

Cab: Dumble 2x12 or 4x12 (G12-65, EVM)

Volume (Clean), Bass, Middle, Treble, Overdrive Level, Ratio, Volume (Overdrive), Master, Presence, Bright switch, Mid boost switch, Jazz/Rock switch (not modeled), Pre Amp Boost (PAB)

  1. "The ODS100 has two drive controls, one is right at the input, the other is in the lead boost section."
  2. "I hate to admit it but there is something special about a real Dumble. I don't know what it is but there is something in the voicing. The various clones I have are cool and have their own thing going but they don't sound like the Dumble. Hard amp to play though. Very unforgiving but tremendous clarity." source
  3. "They call HRM "Hot Rubber Monkey" but what it really means is "Hot Rod Marshall"." The HRM Dumbles have a fixed Marshall tone stack at the output of the lead channel. This gives a little scoop to the mids." source
  4. "My Dumble is S/N 0213 IIRC. It's an EL-34 ODS HRM." source
  5. "The ODS-100 Ford 2 model is not based on the HRM model with the HRM tonestack removed. Whether or not the model matches any particular Dumble is unknown as we have not been able to procure a non-HRM Dumble yet. The model is based on schematics that were given to us that supposedly accurately represent Robben Ford's Dumble. Whether or not the schematics are accurate I do not know. The voltage divider at the output of V1B is set to 0.078 which is based on the values that are indicated on the schematic for the set-point of the trimmer. As no two Dumbles are identical it stands to reason that one person's interpretation of the ideal Dumble voicing may not agree with another's. Since V1 is running clean you can get more gain by simply increasing Input Trim. It will have basically the same effect as increasing the trimmer."
  6. "A signal divider, which is more correctly called a voltage divider, is calculated by taking the resistance to ground divided by the sum of the resistances. In this case the voltage divider would be 26.7/317 = 0.084. This is very close to the values that we were given (which yield 0.078). Our model also uses local feedback on V1B (which is about 2-3 dB less gain) and accounts for the voltage divider's affect on the AC load line. In fact all stages in a Dumble typically have an AC load-line that's different than the DC load-line due to the load resistance being significant in relation to the plate resistor. Since V1A and V1B run clean (linear) Input Trim will accomplish the same thing as increasing the trimmer into the drive stages. This is because a linear system is commutative (see any introductory Signals and Systems text for properties of linear systems). The commutative property is where A x B = B x A. Therefore it does not matter if the gain is before or after the linear stages."
  7. "The Mid switch, sometimes labeled "Deep", shorts out the 390 pF cap in the tone stack (which is in series with a 2 nF cap). All that is left then is the 2 nF cap. With PAB active this lowers the lowcut frequency." source
  8. "Maybe the best clean model IMO. You have to really crank the MV though (just like the real amp)." source
  9. "The only amps with a bright cap on the MV are Dumbles and their various clones/derivatives. This was/is done to compensate for the lack of a buffer for the fx loop. The loop send is taken right off the MV which means the output impedance is very high. Any significant length of cable will then attenuate the highs due to the cable capacitance. The bright cap boosts the highs to compensate. It's the same idea as a bright cap on your guitar's volume knob. Crude. FWIW, this is a terrible loop design but "it's a Dumble" so it's all part of the mystique. Dumble then released the "Dumbleator" which is nothing more than a buffer and recovery in an external box. Dumble fanatics, of course, claim that to have the true Dumble experience you MUST use the Dumbleator which is just another load of BS." source
  10. "We actually own a real Dumble. I bought it off a lawyer (surprise, surprise) some years ago who was in trouble with the IRS. Also a matching 4x12 cab. Both in mint condition. At the time I paid $50K for both. Probably worth twice that now." source

Yek's write-up

ODS-100 FORD

ODS-100 FORD PAB

ODS-100 FORD PAB MID

ODS-100 HRM

ODS-100 HRM MID

PVH 6160 BLOCK (based on Peavey "Block Letter" EVH 5150)

5150.jpg

Model:

  • Lead channel

Cab: Peavey 4x12 (Sheffield 1200)

Pre Gain, Post Gain (Master), Low, Mid, High, Resonance, Presence, Bright and Crunch switches (Rhythm channel only, not modeled)

  1. "I have a "holy grail" Block Letter 5150 (supposedly). It sounds way better than most 5150s for some reason which is a good thing for you guys. I think it's partly due to the fact that it has a bias mod so it's biased a bit warmer than a stock version." source

Yek's write-up

PVH 6160+ CLEAN (based on Peavey 6505+ / EVH 5150-II)

6505.jpg

Models:

  • Clean channel, Bright switch OFF
  • Clean channel, Bright switch ON
  • Crunch channel, Bright switch OFF
  • Crunch channel, Bright switch ON
  • Lead channel

Cabs Peavey 4x12 (V30)

Rhythm channel: Pre (gain), Bright switch (6dB at 2kHz), Crunch switch, Low, Mid, High, Post (Master), Resonance, Presence

Lead channel: Pre (gain), Low, Mid, High, Post (Master), Resonance, Presence

  1. "Chris Quigley's 6505 was the reference amp. It's my amp now. It's a very good sounding one." source
  2. (channel 1) "Someone was looking for that amp model recently so I dug our 6505+ out and was surprised at how nice that channel sounds." source
  3. "A 6505+ is identical to a 5150 except it has no bright cap. Use the 5150 model and turn off the bright switch." source
  4. "The Bright switch on clean and crunch channels does not engage a capacitor on the drive potentiometer as is typical but instead disengages a treble cut circuit"

Yek's write-up

PVH 6160+ CLEAN BRIGHT

PVH 6160+ CRUNCH

PVH 6160+ CRUNCH BRIGHT

PVH 6160+ LEAD (based on Peavey 6505+ / EVH 5150-II)

PLEXI 100W 1970 (based on 1970 100W Marshall Plexi)

SLP.png

Models:

  • 1970 100 watts, EL34
  • 1969 100 watts, High Treble channel
  • 1969 100 watts, Normal and High Treble channels jumpered
  • 1969 100 watts, Normal channel
  • 1972 50 watts, 6550 power tubes, jumpered channels
  • 6AC7 50 watts, 6AC7 power tubes
  • 1981 50 watts JMP with master volume
  • 1972 50 watts, EL34, High Treble channel ("High 1")
  • 1972 50 watts, EL34, High Treble channel ("High 2") (2nd triode stage has a 0.68uF cathode bypass capacitor, which was added in the early 70’s and gives a slightly brighter tone)
  • 1972 50 watts, EL34, Normal and High Treble channels jumpered
  • 1972 50 watts, EL34, Normal channel

Cab: Marshall 4x12 (G12M, G12H)

Volume Normal / Volume Treble, Bass, Middle, Treble, Presence, Master (Plexi 2204 only)

  1. "1970 Marshall 1959SLP 100 has a darker, smoother sound than earlier Plexis."
  2. "One of the first mods people make to real 'Plexi' Marshalls is to "clip the bright cap". The bright cap varied over the years, supposedly depending on what was lying around in the shop. The model defaults to the bright cap in the circuit. If you turn off Bright you're effectively clipping the bright cap. The bright cap in Marshalls can be very bright and harsh. However, if you crank the Master you might find the extra brightness helps compensate for the power amp getting darker."
  3. "It's the way a Plexi is supposed to sound. That's due to the cathode follower. That raspiness helps it cut through in a mix. I own three of them and they are that fizzy." source
  4. "Don't be afraid to turn the bass all the way down or the treble all the way up. Just like with the actual amp. For example, on the Normal channel of a Plexi most people turn the bass way down. Otherwise it's too flubby." source
  5. "My settings for a "typical" Plexi tone are Bass: 2, Mid: 8, Treble 7.5. Adjust Presence to taste." source
  6. "Try the Plexi 100W 1970 with Factory Cab 54. Be sure to dial it in like you would in 1970, i.e. turn the Mid, Treble and Presence way up; turn Norm Drive and Bass down a bit." source
  7. (Boston/Rockman sound) "Plexi Jump. Everything on 7. Put a Filter block in front: Type: Peaking, Freq: ~800 Hz, Q: 0.707, Gain 12 dB."
  8. (Plexi 100W 1970) "I've never cared for that model nor the actual amp. IMO it doesn't have enough feedback (100K off the 4-ohm tap). Some amps of that era had 47K off the 4-ohm tap. Some had 47K off the 8-ohm tap. Some had 100K off the 8-ohm tap and some even had 47K off the 16-ohm tap! IOW all over the map. Bottom line: try adjusting Negative Feedback. I always raise it up a bit with that model. Around 4 or so." source
  9. "What you are hearing is output transformer high frequency resonance. Old Plexis didn't do this because they had good transformers. New transformers are crappy and resonate at the cutoff frequency because they are underdamped. This causes a raspy, fizzy texture to the distortion. The transformer resonance is adjustable but the parameter isn't exposed to the user. When you turn it up you get that same squishy rasp that you are hearing. For the Plexis I have the damping set to flat with no resonance because that's how our vintage Plexis measure. Our 50W is a little underdamped but people complain about raspy high frequencies so I erred on the safe side." source
  10. "When modding Marshalls for higher gain sometimes the modder will decrease the input frequency response to reduce noise and fizziness. You can do this by reducing the high-cut frequency in the input EQ. Or you can use a high-shelf filter which is a little more subtle. Another technique is to put a capacitor across the second-to-last triode stage. This is the "Triode 1 Plate Freq" parameter. Reduce this to around 2 kHz to start which is typical of amps like an SLO100, etc." source
  11. "The Plexi 100W 1970 model is a non-MV "Plexi". Circuit is slightly different than the late 60's model (Plexi 100W)." source
  12. "All the distortion comes from the power amp so the tone controls don't do much." source

Forum discussion about the Plexi 2204 model

Yek's write-up

PLEXI 100W HIGH (based on 1969 100W Marshall Plexi)

PLEXI 100W JUMPED

PLEXI 100W NORMAL

  1. "The topology of that model does not support a bright cap and the actual amp has no bright cap." source

PLEXI 2204 (based on 1981 50W Marshall JMP 2204)

  1. "Based on a 1981 JMP 50W Master Volume head."
  2. (recommended settings) "Everything on 10."
  3. "There were several versions of the "2204" Plexi. Our model is based on a 1981 2204 Master Volume JMP. It has a different circuit than a JCM800." source

PLEXI 50W 6550 (based on 1972 50W Marshall Plexi with 6550 power tubes)

PLEXI 50W 6CA7 (based on 50W Marshall Plexi with 6AC7 power tubes)

50W Plexi with 6CA7 power tubes

  1. "That's based on my favorite Plexi. I have several but this particular one has 6CA7s and 82K grid resistors(!). Usually the grid resistors are 220K." source

PLEXI 50W HIGH 1 (based on 1972 50W Marshall Plexi)

PLEXI 50W HIGH 2

  1. "Similar to Plexi 50W High 1 except the second triode stage has a 0.68uF cathode bypass capacitor. The second bypass capacitor was added in the early 70’s and gives a slightly brighter tone."

PLEXI 50W JUMPED

PLEXI 50W NORMAL

PORTA-BASS (based on Ampeg Portaflex bass amp)

Model:

  • Single channel

Cab: SVT 8x10

Gain, Volume, Bass, Mid, Treble, Mid Frequency (not modeled), input pad (not modeled), compression (not modeled), limiter (not modeled), Ultra Hi/Lo switches (not modeled)

It's not been disclosed on which Portaflex amplifier (PF-xxx) the model is based

Notes: see SV Bass

PRINCE TONE 5F2 (based on Fender Tweed Princeton, 5F2-A)

Princeton.jpg

Model:

  • Single channel

Cab: Fender 1x10 (C10n)

Volume, Tone

Yek's write-up

PRINCE TONE AA964 (based on Fender silverface Princeton without reverb, AA964)

Model:

  • Single channel

Volume, Bass, Treble

  1. "Based on a Fender AA964 Princeton. This particular amp is an early CBS “Silverface” but still using pre-CBS design and components."

See above

PRINCE TONE REVERB (based on 1966 blackface Fender Princeton with reverb, AA964)

Princetonreverb.jpg

Model:

  • Single channel

Volume, Bass, Treble, Reverb (not modeled)

  1. "A Princeton Reverb has an extra gain stage due to the reverb recovery. Hence it has more gain." source

RECTO1 ORANGE MODERN (based on Mesa's two-channel Dual Rectifier)

Recto.png

Models:

  • Recto1: original 2-channel Rectifier, Orange channel, Modern mode
  • Recto1: original 2-channel Rectifier, Orange channel, Vintage mode
  • Recto1: original 2-channel Rectifier, Red channel, Modern mode
  • Recto2: later 3-channel Rectifier, Orange channel, Modern mode
  • Recto2: later 3-channel Rectifier, Orange channel, Vintage mode
  • Recto2: later 3-channel Rectifier, Red channel, Modern mode
  • Recto2: later 3-channel Rectifier, Red channel, Vintage mode

Cab: Mesa 4x12 (V30)

Gain, Master, Bass, Middle, Treble, Presence

  1. "For an amp like the Recto you want the Master below 5.0." source
  2. "The reason you're hearing the highs rolled off is because the Master is too high. As you increase the Master the highs get muffled. 7.02 for the Recto Master is ridiculous and will sound like crap." source
  3. "Note that the Orange Modern and Red Modern models have no negative feedback and therefore the Presence control is a Hi Cut control." source
  4. "A typical Recto cabinet has a resonant frequency a little over 100 Hz." source
  5. "The unique thing about a Dual Recto tone stack is that the Presence control is part of the tone stack. So the Recto tone controls also interact with the presence control." source
  6. "Rectos don't have a Depth control and even if they did it wouldn't do anything in Modern Red mode since that mode has no negative feedback. When you put a Recto into Modern Red mode it opens a relay which removes the NFB." source
  7. "Real Rectos are bassy/fizzy beasts but that tone works great for certain genres." source
  8. "If you are using the Modern modes be very careful with the MV. If you turn it up too high it will flub out really quick. If in doubt reduce the MV. Compensate with the Level control." source
  9. "The Modern mode in Rectos has no negative feedback so there's a huge bass boost from the speaker impedance. Fortunately you can reduce this by reducing the LF Resonance on the Spkr tab which is something you can't do with the real amp without trying different speakers or cabinet." source
  10. "Depth works by varying the negative feedback at low frequencies. There is no NFB in the Modern Red mode so the Depth knob won't do anything." source
  11. "All passive tone controls interact and all the Axe-Fx tone stacks replicate this behavior. The unique thing about a Dual Recto tone stack is that the Presence control is part of the tone stack. So the Recto tone controls also interact with the presence control." source
  12. "If you are using the Modern mode then it's all about the Spkr page. Since that mode has no negative feedback the speaker resonance has a tremendous effect on the sound. Adjust LF Res, Freq and Q to get desired response." source
  13. "Another thing with the Modern modes is that the power amp distorts early (again since there is no negative feedback and, therefore, the power amp has a lot more gain). At 9:00 on the Master the power amp is distorting (it's probably a linear taper pot for the ol' "Wow, this amp is loud bro!"). (...) Another thing is that if you put ANYTHING in the loop of a Recto it changes the tone significantly. Even just a short cable. All the models were made with the loop off. And another thing is that Rectos changed a lot. I have three of them and they all sound completely different. One of them has a different value Gain pot than the others. One of them has a different value bright cap than the one with the same Gain pot. Since the gain pot and bright cap interact this makes a HUGE difference. Experiment with the Bright Cap value. The Recto1 models are based on our Rev. F (IIRC, whatever the desirable ones are). The Recto2 models are based on the latest version." source
  14. "We have three of them, a single and two duals." source
  15. "If you want that Recto crunch but not so flubby and fizzy try the SOLO models." source
  16. "A Recto is not a Mark series amp. Totally different preamp topology. A Recto preamp is very similar to a SLO100." source
  17. (amp model closest to the Mesa Roadster) "Recto 2." source
  18. "The Rectifier preamp is almost identical to an SLO100." ... "There's a treble cut on the tone stack and a some minor changes to the power amp and power supply but it's basically a ripoff. The schematics are readily available for both so anyone interested can see for themselves. Personally I hate the 39K resistor. It biases the stage much too cold for my tastes. It prevents blocking distortion but there are better ways to do it IMO. The FAS Modern model is similar but biases the stage more towards the center." source
  19. "Using the loop on a modern 3-channel rectifier changes the tone pretty dramatically (we model the amp with the loop bypassed). There are several reasons for this:
    1. The source impedance to the power amp is changed.
    2. There is a treble peaker on the Output pot. Presumably this was done to counteract treble loss in the loop.
    3. An extra highpass filter is present due to the loop send stage. The corner frequency is around 30 Hz. That's low but it does affect subharmonics due to intermodulation. I would've made the capacitor around 1uF." source
  20. "Recto2 is based on a new 3-channel Dual Rectifier. Recto1 is based on the original 2-channel." source
  21. "I have three Rectos: an old Single Rectifier, an old (Rev. G maybe) Dual Rectifier and a new Dual Rectifier. They all sound completely different. The old Dual is the best sounding of the bunch." source

Yek's write-up

RECTO1 ORANGE NORMAL

RECTO1 RED

RECTO2 ORANGE MODERN (based on Mesa's three-channel Dual Rectifier)

RECTO2 ORANGE VINTAGE

RECTO2 RED MODERN

RECTO2 RED VINTAGE

RUBY ROCKET (based on Paul Ruby Rocket)

Rocket.jpg

Models:

  • Bright switch ON
  • Bright switch OFF

Cab: 1x12 (Alnico, G12M)

Volume, Bass, Treble, Cut, Bright switch

  1. "The Ruby Rocket is not the same as an actual Trainwreck Rocket. There are topology differences and the amps don't sound the same." source
  2. "Ruby Rocket is based on a Paul Ruby Rocket which is based on a TW Rocket but with some notable differences." source
  3. "The Bright switch changes a coupling cap and the treble cap in the tone stack. This cuts the bass, shifts the midrange and lowers the gain slightly. That's why there are two separate models. Otherwise you would just engage the Bright switch under the Treble knob."
  4. "The Ruby Rocket has a bright switch but it's actually a channel select (selects the bright channel)."

Yek's write-up

RUBY ROCKET BRIGHT

SV BASS 1 (based on Ampeg SVT bass amp)

Ampeg.jpg

Model (in the Axe-Fx III):

  • SV Bass 1: Fractal Audio's SV Bass model prior to the change in firmware Ares 2.05 and later for the Axe-Fx III
  • SV Bass 2: 1970 Ampeg SVT with 6550 power tubes and the midrange switch in position 3

Note: on the Axe-Fx II (firmware Ares) these models are reversed source

Cab: SVT 8x10

Volume, Bass, Mid (and Mid Frequency), Treble, Master, Ultra Lo / Hi switches

Yek's write-up

SV BASS 2

SHIVER CLEAN (based on Bogner Shiva 20th Anniversary)

Shiva.png

Models:

  • Clean channel
  • Lead channel

Clean channel: Volume, Bass, Treble, Bright switch. Shared: Master, Presence, Excursion, Boost switch (not modeled)

Lead channel: Gain, Volume, Bass, Middle, Treble, Shift EQ (not modeled), Bright switch, Mode switch (not modeled). Shared: Master, Presence, Excursion, Boost switch (not modeled)

Cab: Bogner 1x12 or 2x12 (Classic 80, V30)

  1. "People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." source
  2. "Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"." source
  3. "The original Shiva models were based on a borrowed amp. We now have a 20th Anniversary Shiva (with KT88s) and the new models are based on that amp. We did notice that this amp has less gain than the one used originally but the model is faithful to the amp." source
  4. "Bogner's are notoriously "slow" due to the low B+ voltage. Main reason I can't get along with them. You can try increasing the Variac." source
  5. "Most amps use a linear taper for the treble pot. Bogners use a log taper. So when the knob is at noon on a Bogner it's similar to 8 o'clock on most amps." source

Yek's write-up

SHIVER LEAD

SOLO 100 CLEAN (based on Soldano SLO-100)

Slo.jpg

Models:

  • Normal channel in Clean mode
  • Normal channel in Rhythm mode
  • Overdrive channel

Cab: Soldano 4x12 (Eminence)

Gain, Bass, Middle, Treble, Master, Presence, Bright switch (Normal channel only), Depth (with Depth mod)

  1. "The SLO-100 is the loudest amp I've ever used. It feels like there's a small nuclear explosion going off inside when ever you hit a power chord. It's a wicked amp but not something I would recommend for anything but large gigs. If you like the SLO-100 model you might want to try the Recto models too. It's not widely known but the Rectifier preamp is a derivative of the SLO-100. Some minor changes but the basic topology is identical."
  2. "I have a really good SLO-100. An original black faceplate version. Pristine condition. That amp was one of the primary amps used in the G2 modeling development. It was by studying that and a really nice JCM-800 that I finally figured out the secret to cathode follower." source
  3. "Mine doesn't have the depth mod but I used the values from the schematic I have and I believe the schematic is correct." source
  4. "SLOs are brittle at low volumes. When you crank them up it smooths out. The problems is at cranked volumes they can kill small animals."
  5. "The key to an SLO100 is to run the MV high so that the mids thicken up. Otherwise it's a shrill mess. In certain contexts with the right IR it can be a cool sound." source
  6. "Note that the knobs on '5' on the Axe-Fx correspond to '6' on an SLO because they go to 11. 'Noon' on an SLO isn't actually the knobs at half-way. The range of the knobs is like 8:00 to 6:00 as opposed to 7:00 to 5:00. They're biased clockwise." source
  7. "Another caveat when comparing amps: many times the knobs aren't "centered". IOW if you put the Treble knob at noon it isn't actually at 50%. You can see this by turning the knob all the way down and all the way up. It may not be symmetrical. This happens when the pots don't have a flat spot and/or the pot is rotated within the mounting hole. Or in the case of an SLO100 it is intentional. On an SLO100 all the way down is around 8:00 and all the way up is 6:00 so 50% is around 1:00 not noon." source
  8. "Many people find SLOs too bright. The "Warren Haynes" mod is a popular mod to reduce the brightness."
  9. "Those amps are all designed to get their character from power amp distortion. If you don't push the power amp all you are hearing is the preamp which is voiced to be trebly. The power amp then compresses the highs and the sound gets fatter."
  10. "If you want that Recto crunch but not so flubby and fizzy try the SOLO models. They're much brighter so I turn the treble down quite a bit." source
  11. "SLO 100s are NOT smooth amps. They are nasty, aggressive things that you have to crank the MV." source
  12. "A Recto is not a Mark series amp. Totally different preamp topology. A Recto preamp is very similar to a SLO100." source
  13. "The Rectifier preamp is almost identical to an SLO100." source
  14. "They're pretty awesome amps but to sound great you have to crank 'em and they're ear-splitting loud." source

Yek's write-up

SOLO 100 LEAD

SOLO 100 RHYTHM

SOLO 88 CLEAN (based on Soldano X88R preamp)

X88r.jpg

Models:

  • Clean channel
  • Rhythm channel
  • Lead channel

Gain, Bass, Middle, Treble, Volume, Bright switch (Clean and Rhythm channels)

  1. "Solo 88 RHY is based on an X88R since the rhythm channel of an X99 is identical to an SLO-100. FWIW, I have two X88Rs and the model agrees with both."

Yek's write-up

SOLO 88 LEAD

SOLO 88 RHYTHM

SOLO 99 CLEAN (based on Soldano/Caswell X99 preamp)

Cliff X88.jpg

Models:

  • Clean channel
  • Lead channel, Bright OFF
  • Lead channel, Bright ON

Gain, Bass, Middle, Treble, Volume, Bright switch

  1. "The rhythm channel of an X99 is identical to a SLO 100." source
  2. "Power amp: same as SLO100." source
  3. "The bright cap on the X99 Clean is not across the Drive pot. The exposed "Bright Cap" is across the Drive pot, the X99 clean channel does not have one." source

Yek's write-up

SOLO 99 LEAD

SOLO 99 LEAD BRIGHT

SPAWN NITROUS 1 (based on Splawn Nitro)

Nitro.gif

Models:

  • Overdrive channel in OD-1 (Rhythm) mode
  • Overdrive channel in OD-2 (Lead) mode

Cab: Splawn 4x12 (G12M, G12-65, V30)

Resonance, Presence, Bass, Middle, Treble, Master, Gain

  1. "Based on a Splawn Nitro with KT-88 power tubes."

Yek's write-up

SPAWN NITROUS 2

SPAWN Q-ROD OD1-1 (based on Splawn Quickrod)

Quickrod.jpg

Models:

  • Overdrive channel, Rhythm mode, 1st gear ("Plexi")
  • Overdrive channel, Rhythm mode, 2nd gear ("hot-rodded JCM 800")
  • Overdrive channel, Rhythm mode, 3rd gear ("super hot-rodded 800")
  • Overdrive channel, Lead mode, 1st gear
  • Overdrive channel, Lead mode, 2nd gear
  • Overdrive channel, Lead mode, 3rd gear

Cab: Splawn (G12M, G12-65, V30)

Presence, Bass, Middle, Treble, Volume, Gain, Mode

  1. "The reason Splawns sound weird is because the tone stack is plate driven. You lose the cathode follower compression and the high source resistance of the plate alters the tone stack frequency response. The plate driven tone stack in the Splawn reduces the highs considerably. You can see this is you run Tone Stack Calculator for the Marshall tone stack and increase the source resistance." source
  2. "OD2 switches in a cathode bypass cap which increases the gain of that stage." source
  3. "The Quick Rod is a bit odd in that the Drive pot is linear taper. Most amps use an audio taper pot. This means that at noon the amp is nearly at full gain. Not sure why they did it that way but it is what it is." source

Yek's write-up

SPAWN Q-ROD OD1-2

SPAWN Q-ROD OD1-3

SPAWN Q-ROD OD2-1

SPAWN Q-ROD OD2-2

SPAWN Q-ROD OD2-3

SUHR BADGER 18 (based on Suhr Badger 18)

Badger18.jpg

Model

  • Single channel

Cab: Suhr 1x12 or 2x12 (V30, G12M)

Bass, Middle, Treble, Gain, Power (controls Power Scaling, not modeled), Drive (acts as Master with Power at 10)

  1. "The Badgers were MIMIC'd with power scaling at full. The knobs are a bit confusing on a Badger. The knob closest to the input jack is labeled "Gain". It is equivalent to the Drive knob in the Axe. The knob labeled Drive is the Master Volume." source
  2. "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion. The worst amp in this regard is the Badger 18. The cathode resistors are very large and the amp shifts into Class B operation early causing a spitty, buzzy distortion quality. This amp, however, is liked by many so that just goes to show that some people like that. It's like fuzz pedals. Some people like that spitty sound. I personally don't like it. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch)." source
  3. "The Badger doesn't have a Bright switch." source
  4. "The controls on the Badger are a bit confusing. Master Volume is labeled Drive. You have the Drive at 10 which means your power amp is at full blast. This can make the bass muddy. Turn the Drive down." source

Yek's write-up

SUHR BADGER 30 (based on Suhr Badger 30)

Badger30.jpg

Model

  • Single channel

Cab: Suhr 1x12 or 2x12 (V30, G12M)

Bass, Middle, Treble, Gain, Power (controls Power Scaling, not modeled), Drive (acts as Master with Power at 10)

  1. "The Badgers were MIMIC'd with power scaling at full. The knobs are a bit confusing on a Badger. The knob closest to the input jack is labeled "Gain". It is equivalent to the Drive knob in the Axe. The knob labeled Drive is the Master Volume." source
  2. "IMO the designs are poor because... wait for it... they exhibit a papery buzz. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The cathode capacitor charges up and the bias point shifts dramatically. This causes lots of crossover distortion (papery buzz). It's worse on lower notes because lower notes have more energy and charge the cap more. The is probably the reason Leo Fender switched to fixed bias amps with negative feedback. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). That's why the buzzing went away when you increased negative feedback. Crossover distortion is a unique sound. For cleaner sounds it tends to be objectionable. For overdriven sounds some find it desirable. EVH ostensibly liked his amps biased cold to get some crossover distortion. There are even some amps that have circuits to intentionally generate crossover distortion. Some distortion pedals also do this. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. This is not a problem with our virtual amps though. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. This means the amps are biased somewhat cold to begin with and shift to very cold as soon as overdriven. One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion. The worst amp in this regard is the Badger 18. The cathode resistors are very large and the amp shifts into Class B operation early causing a spitty, buzzy distortion quality. This amp, however, is liked by many so that just goes to show that some people like that. It's like fuzz pedals. Some people like that spitty sound. I personally don't like it. Then there's shared vs. split cathode. If you look at the schematics on the web the Maz-38 is shared cathode. I could never get the model to sound exactly like our reference amp. Finally I traced the entire circuit and our particular amp is a split cathode. As soon as I changed the model to split cathode it was spot on. This is not exposed to the user though (there's a hidden shared/split switch)." source
  3. "The Badger doesn't have a Bright switch." source
  4. "The controls on the Badger are a bit confusing. Master Volume is labeled Drive. You have the Drive at 10 which means your power amp is at full blast. This can make the bass muddy. Turn the Drive down." source

Yek's write-up

SUPER VERB NORMAL (based on 1964 Fender Super Reverb, AB763)

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Models:

  • Normal channel
  • Vibrato channel

Cab: Fender 4x10 (C10R, C10Q, P10R)

Volume, Bass, Middle (Vibrato channel only), Treble, Bright switch, Reverb (not modeled), Vibrato (not modeled)

  1. "I modeled the Super with V1 pulled as most people pull V1 so the amp has more grunt. Turn down the MV to make it cleaner."
  2. "The Super Reverb model is based on the amp with V1 removed (which is a common mod). This increases the level into the power amp by about a factor of two." source
  3. "The Super Reverb model is "Diaz Modded". IOW, I pulled V1. This gives the amp a lot more gain so it's not surprising you're getting breakup at around 1.5. You can un-mod the model by turning down the MV Trim to around 0.5." source
  4. "A Pro Reverb is basically identical to a Super Reverb except for the speakers (and faceplate)." source And: "The Blackface Pro Reverb, model AA165, was virtually identical to the AB763 Super Reverb except for the speakers and tone stacks. If you use the Super Verb model and set the Tone Stack type to Blackface you'll basically have a Pro Reverb. Set the Mid control fairly high to emulate the fixed 6.8K mid resistor. I'd say around 7 or 8." source
  5. (blackface versions) "Not a huge change with the Silverfaced versions. They're a little cleaner and brighter but the topology is the same. Some minor circuit changes here and there. Same transformers. The biggest change, IMO, was changing the PI resistors to 47K which gives you a little less gain in the PI." source
  6. "The Super Reverb is really just a 50W version of a Twin Reverb with different speakers." source

Yek's write-up

SUPER VERB VIBRATO

SUPERTWEED (custom model)

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Custom Fractal Audio model

Yek's write-up

SUPREMO TREM (based on Supro 1964T)

Supro.png

Model:

  • single model

Cab: Supro 2x12

Volume, Tone

  1. "They're simple amps with minimal tone shaping."