View source for Drive block

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[[image:Drive block.PNG|350px]]
=The Drive block=

==Available on which products==

* '''Axe-Fx III''': 4 blocks
* '''FM3''': 2 blocks
* '''FM9''': 3 blocks
* '''Axe-Fx II''': 2 blocks
* '''AX8''': 2 blocks
* '''FX8''': 2 blocks

==Channels or X/Y switching==

* '''Axe-Fx III''' and '''FM9''' and '''FM3''': 4 channels
* '''Axe-Fx II''': X/Y
* '''AX8''': X/Y
* '''FX8''': X/Y

=About drive modeling=

==Yek's Guide to the Fractal Audio Drive models==

Forum member Yek has written a guide (PDF) that covers all the models in detail. Click on the image below.

[[image:Yeks_Drives_Guide.png|link=http://wiki.fractalaudio.com/axefx2/index.php?title=Yeks_Guide_to_the_Fractal_Audio_Drive_Models|150px]]

==Pictures of the modeled pedals==

[http://forum.fractalaudio.com/threads/fas-amps-models-gallery-more-qu-8-02.105944 Gallery of modeled pedals, by forum member MDProd]

==Factory presets==

Many factory presets have one or more Drive blocks. Search the [[Factory presets]] page.

==Modeling improvements==

<blockquote>"The drive block in the III uses a higher oversampling ratio and double-precision filters in some places compared to the II." [http://www.thegearpage.net/board/index.php?threads/axe-fx-iii.1907452/page-68#post-25886137] </blockquote>

'''Firmware 3.02:'''

This firmware introduced major improvements to modeling of drive pedals. Drive models based on op-amp and diode clipping topologies were been completely overhauled. This is referred to as: FASPICE. This includes all types based on the Tube Screamer circuit. 

''Important: these changes result in significant changes in sound, gain and level. Tips and tricks for Drive blocks prior to firmware 3.02 may not apply anymore. Also, demos and tutorials may not represent the current tone anymore.''

<blockquote>"Drive models based on op-amp and diode clipping topologies have been completely overhauled in firmware 3.02 and later.

For many types there is now a “Dry Gain” control. This parameter controls the amount of “dry” signal mixed with the “wet” (distorted) signal. For a Tube Screamer-based model this will default to 100% due to the topology. For other types this will default to 0. Values up to 200% are allowed. Note that the dry data is added before any tone controls and therefore is not exactly equivalent to a mix but rather replicates the behavior of analog circuits.

Drive types based on op-amp and diode clipping circuits now allow control over the type and quantity of diodes in the positive and negative polarity. For example, the user can select (2) 1N34A diodes for positive signal polarity and (1) red LED for negative. Experiment with the various diode types and quantities to obtain new and unique sounds.

The Basic GUI page now reflects only the controls found on the actual pedal. In cases where the actual pedal does not have any tone controls a simple Tone control is included for convenience."</blockquote>

The tone circuits of ALL drive types have been updated in firmware Ares 3.02 and later, and all models have been rematched to the original pedals. [http://forum.fractalaudio.com/threads/drive-block-status.147823] [http://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-3-02-public-beta.147926/page-6#post-1749554]

The changes do not apply to the input boosts in the Amp block. [http://forum.fractalaudio.com/threads/faith-restored-in-my-axe.147281/page-3#post-1741111]

More about FASPICE:

<blockquote>"New Drive block algorithm (FASPICE) implemented and working." [http://forum.fractalaudio.com/threads/drive-block-status.147823]</blockquote>

<blockquote>"I've "cracked the code" on drive pedals and figured out a way to do a SPICE simulation in real time without using gobs of CPU. It's so simple I can't believe no one ever thought of it before but none of the papers even approach anything resembling the technique. This will bring "Ares" level modeling to the Drive block." [http://forum.fractalaudio.com/threads/faith-restored-in-my-axe.147281/#post-1740724]</blockquote>

<blockquote>"This algorithm applies to a particular set of circuits that incorporate diodes as a nonlinear component. SPICE modeling is particularly slow when modeling diodes due to convergence issues. However the diodes in drive pedals are used in such a way that there's a trick that can be employed to dramatically decrease the amount of CPU needed to simulate the circuit." [http://forum.fractalaudio.com/threads/faith-restored-in-my-axe.147281/page-3#post-1741111]</blockquote>

<blockquote>"It normally takes a lot of CPU power to do a real-time simulation. The amp block uses an entire dedicated DSP. To do even a simple distortion pedal would normally require huge amounts of CPU. But I stumbled upon a simple trick that reduces it dramatically." [http://forum.fractalaudio.com/threads/faith-restored-in-my-axe.147281/page-2#post-1740777]</blockquote>

<blockquote> ([http://forum.fractalaudio.com/proxy.php?image=https%3A%2F%2Fwww.premierguitar.com%2FStream%2FStreamImage.aspx%3FImage_ID%3DCC1579BA-AEA2-4CDF-A273-6F22E1316EB8%26Image_Type%3Dimage&hash=c5c3cdbec91441dc4bbca4abc08ac36e picture]) "See the two diodes, D1 and D2? The type and quantity of these diodes (among other things that I can't reveal) affect the tone. D1 is the "negative" diode. It conducts when the voltage is negative. D2 is the "positive" diode. It conducts when the voltage is positive. In this schematic the diodes are listed as 1N34A but in the original Distortion+ they were actually 1N270. If you select the Plus Dist model and go to the last page in the UI you'll see the type of diode is 1N270. You can change the type and quantity which will change the distortion characteristics.

1N270 and 1N34A are Germanium diodes. They have a greater reverse saturation current (Is) and, hence, a lower forward voltage for a given current. This means they clip sooner. Silicon diodes, i.e. 1N4148, 1N916, etc. have a lower Is and a greater forward voltage. LEDs have yet a greater forward voltage (smaller Is).

This new firmware has 16 diode SPICE models that I collected from various sources that you can play with. 1N914 are often substituted for 1N4148 and vice-versa but they are slightly different so I included both. The original Tube Screamer had 1S1588 which, to my ears, are much different (better) sounding than 1N914 which are used in the newer Tube Screamers." [http://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-3-02-public-beta.147926/#post-1749202] </blockquote>

[https://en.m.wikipedia.org/wiki/SPICE Wikipeda]: "SPICE ("Simulation Program with Integrated Circuit Emphasis") is a general-purpose, open-source analog electronic circuit simulator. It is a program used in integrated circuit and board-level design to check the integrity of circuit designs and to predict circuit behavior."

'''Firmware 10:'''

* Improved Drive block. New diode modeling algorithm improves clipping accuracy especially for diodes with higher saturation currents, i.e. 1N270 and other germanium types.
* Added D9E and D18 diode models to Drive block. These are Soviet germanium diodes valued for their smooth distortion characteristics.

<blockquote>"Firmware 10 uses new "FASPICE XD" modeling in the amp and drive block. It requires a bit more CPU but the accuracy is far better. I figured out a way to ensure that transcendental equations are always stiffly stable and converge in a fixed amount of time. Significantly faster and at least as accurate as trapezoidal, modified trap, gear, etc. algorithms. It dampens numerical ringing without the side-effect of damping actual circuit ringing. Once you see how it works it seems hard to believe that no one has thought of it before but I can't find a single paper or article that uses the technique. The only drawback is that frequency response is limited to about 1/2 Nyquist but since we oversample that's irrelevant. So that's why you get the "amp feels like it's going to explode" but without the noise and artifacts." [https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-10-00.154850/post-1842387]</blockquote>

The affected Drive models are: ([https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-version-10-00.154850/post-1842398])
* Rat
* Super OD
* T808 OD
* Fat Rat
* Plus Distortion
* Full OD
* Blues OD
* Shred Distortion
* M-Zone Distortion
* BB Pre
* Eternal Love
* Esoteric ACB
* Esoteric RCB
* Zen Master
* FAS LED-Drive
* Ruckus
* FAS Boost
* Timothy
* Tone of Kings
* Heartpedal 11
* Jam Ray

'''Firmware 12:'''

The Drive block's EQ now supports placement pre- or post-distortion.

'''Firmware 13:'''

<blockquote>(release notes) "Improved Drive block modeling. New algorithm uses a novel solution to solve the nonlinear ODE of a diode clipper with memory (i.e. a capacitor). The accuracy of the diode I-V curve is also greatly improved. This new algorithm has the accuracy of implicit iterative solutions with speed rivaling explicit solutions. CPU usage is only slightly increased vs. the previous algorithm. Note that many of the Drive models will now behave differently and presets should be auditioned. The behavior of the tone controls in some models has also changed. Of note are the Timmy models where the tone controls are now faithful to the actual pedal and decrease bass/treble when turned clockwise.

The Drive block now features a “Bass Response” control for types based on the Rat, Tube Screamer and various derivates. In some models this is duplicated on the Basic page as it is the Bass/Voice/etc. control (and renamed accordingly). This function was previously provided by the Low Cut control. The Low Cut control is now a separate control that allows adjusting the input highpass frequency. Existing presets will automatically be updated with the new default value for the Low Cut control.

Added Bias control to GUI of all Drive block models."</blockquote>

[https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-release-version-13-00-public-beta.164208/post-1968588 More information]

[https://forum.fractalaudio.com/threads/how-much-better-are-the-drives-compared-to-the-fm3.168483 From a forum thread:]

<blockquote>"It solves the nonlinear ODE using a novel technique."</blockquote>

<blockquote>"Personally I think it's noticeably better. I never used Drive blocks before and now I use them occasionally."</blockquote>

<blockquote>"They sound more "analog" and feel better. The old algorithm is the classic filter->waveshaper->filter technique. It's okay but I've long moved beyond waveshapers in amp modeling so it was time to do that in the drive block."</blockquote>

<blockquote>"We completely redid the drive block using a novel technique for solving the nonlinear ODE that you get with a resistor/diode/capacitor that's used in 99% of drive pedals. It results in much improved sound and feel." [https://www.thegearpage.net/board/index.php?threads/fm3-or-helix.2232150/post-32259119]</blockquote>

The changes in firmware Ares 13 for the Axe-Fx III were ported to firmware 3.03 (and later) for the FM3, including all drive types.

'''Firmware 17:'''

<blockquote>"Added 1S1588T diode SPICE model to Drive block. This is the Toshiba version of the 1S1588 and is reportedly the diode used in the “best sounding” TS-808s. The T808 OD models have been updated to use this diode. Existing presets are unchanged."<BR><BR>
"Added “Valve Screamer VS9” and "Maxoff 808" Drive models."</blockquote>

<blockquote><q>Improved accuracy of Drive block Drive control for low settings.</q></blockquote>

Firmware for the FM3 and FM9 included the same improvements.

'''Firmware 19.01:'''

* Added Hi Mid control to Drive block.
* Improved accuracy of “G-taper” used for tone control in some Drive models, i.e., T808, VS9, Super OD, etc. Impact on existing presets is likely negligible but any presets using Tube Screamer models and their variants should be auditioned.

'''Firmware 20.03:'''

* Improved Drive block.

'''Firmware 20.04:'''

* More Drive block improvements. Drive block now incorporates the “Chase Transform Technique” for converting analog networks to equivalent digital filters. This improves accuracy in the high frequency region.

'''Firmware 21.00:'''

* Improved Drive block modeling to more accurately model effects of op-amp finite open-loop gain and GBW product.

==Drive block and CPU usage==

The Drive models take up various amounts of CPU. The numbers are listed in [[Yeks_Guide_to_the_Fractal_Audio_Drive_Models | Yek's Guide to the Fractal Audio Drive models (PDF)]].

CPU usage is amplitude dependent on the Axe-Fx II, AX8 and FX8. This means that CPU usage will change when you hit the strings (even with the Drive block in bypassed state). This does not apply to the Axe-Fx III and FM3.

Drive models in firmware Ares 3.02 and later require somewhat less CPU (1-2%) than before.
Diode-based models in firmware Ares 13 and later require more CPU.

==Drive types as input boosts in the Amp block==

Some of the Drive models are available as input boosts in the Amp block. Read this: [[Amp_block#INPUT_BOOST_.2B_BOOST_TYPE_.2B_BOOST_LEVEL|
Input Boost]]

==Distortion in the Cab block==

The [[Cab_block#Preamp | Cab block's Preamp page]] provides tools to simulate the distortion from mic preamps, channel strips and tape.

==Dynamic Distortion==

[[Dynamic Distortion block|Read this]]

==Drive block controls==

<blockquote>"The Tone control works the same as the modeled pedal." [http://forum.fractalaudio.com/threads/axe-fx-ii-quantum-rev-4-01-public-beta.119924/page-45#post-1431060]</blockquote>

<blockquote>"The model's controls replicate the actual pedal." [https://forum.fractalaudio.com/threads/analog-drive-pedals-in-front-of-axe-iii-to-get-better-feel-who-else-is-doing-this.180332/post-2204629]</blockquote>

In firmware Ares 3.02 and later, the basic GUI page reflects only the controls found on the actual pedal. In cases where the actual pedal does not have any tone controls, a simple Tone control is included for convenience.

<blockquote>(firmware Ares 13) "The Drive block now features a “Bass Response” control for types based on the Rat, Tube Screamer and various derivates. In some models this is duplicated on the Basic page as it is the Bass/Voice/etc. control (and renamed accordingly). This function was previously provided by the Low Cut control. The Low Cut control is now a separate control that allows adjusting the input highpass frequency. Existing presets will automatically be updated with the new default value for the Low Cut control."</blockquote>

Firmware 19.01 for the Axe-Fx III and later added the Hi Mid control.

<blockquote>"Note that potentiometer tolerances can be as much as +/-20%. That means the real pedal on 5 could be equivalent to the model anywhere between 4 and 6. The same applies to the Tone and Level controls. The roll off the volume test is a good way to match the gain. Roll off the volume and if the model has less gain increase the gain control and vice-versa." [https://forum.fractalaudio.com/threads/video-boss-sd-1-vs-axe-fx-iii-super-od-sd-1.182128/post-2236354]</blockquote>

About the tone controls on the Tone page:

<blockquote>"It used to read -12 to +12 dB. Now it reads 0 to 10. The response is the same EXCEPT for the BB Preamp, AC Boost and RC Boost models. For those models the bass and treble response behaves the same as the real pedal. Therefore for all but the aforementioned models 0 = -12 dB, 5 = 0 dB and 10 = +12 dB." [https://forum.fractalaudio.com/threads/new-drive-format-question.186138/post-2302378]</blockquote>

==EQ==

The non-graphic EQ comes after the gain (post). The Low Cut is pre-gain. High Cut is post. The graphic EQ is selectable.

==Fade-in when engaged==

Firmware 21.02 for the Axe-Fx III:

<blockquote>"Changed bypass/engage speed for the following blocks: Drive, Filter, Graphic EQ, Parametric EQ, Tremolo and Wah. These blocks now bypass/engage with a gentle fade as rapid bypass/engage with these types of blocks can sound abrupt."</blockquote>

==Preventing phase issues==

When adding a Drive block to a preset with two Amp blocks in parallel rows, make sure to put the the Drive block before the rows split, or add a Drive block to each row, to prevent phase issues.

==Polarity==

<blockquote>"None of our effects ever invert the polarity of the signal as this will cause issues when running chains in parallel." [https://forum.fractalaudio.com/threads/axe-fx-firmware-version-21-02-public-beta-beta-2.191173/post-2375294]</blockquote>

==Fuzz, buffers and impedance==

Many fuzzes depend on a direct connection between the guitar pickup and the input of the pedal. A modeler gets in the way because its input is always buffered. This means that a modeled fuzz will react differently than the actual pedal.

<blockquote>"The Fuzz in the Axe-Fx reacts as though there is a buffer in front of it (because there is). It's a limitation inherent to all modeling products. I modeled it using a nominal source resistance. I forget what I used for the source resistance but it was probably around 100K ohms. To really simulate it you would need a controller to simulate the changing output impedance of the guitar." [http://forum.fractalaudio.com/threads/fuzz-face-authenticity.105704/page-2#post-1265497]</blockquote>

<blockquote>"You can simulate the effect of a guitar into a Fuzz-Face using the Input-Z feature." [http://forum.fractalaudio.com/threads/fuzz-fx-blocks-and-virtual-buffering.133200/#post-1575278]</blockquote>

<blockquote>"The problem is that the signal is buffered and there is no way to model the interaction of the pickups with the circuit." [http://forum.fractalaudio.com/threads/drive-block-status.147823/page-2#post-1747807]</blockquote>

<blockquote>"It's impossible to get a buffered device (like a multi-effect) to replicate fuzz pedals because the input impedance of a fuzz pedal is nonlinear. You can get close by using a static input resistance at the input to the device but it will never be exactly the same. [https://forum.fractalaudio.com/threads/analog-drive-pedals-in-front-of-axe-iii-to-get-better-feel-who-else-is-doing-this.180332/post-2204706]</blockquote>

<blockquote>(firmware 4.00 for the Axe-Fx III) "Duplicating the behavior of a fuzz pedal requires that the pedal be the first non-bypassed block following the Input 1 block and the input block impedance must be set to Auto since fuzz pedals load down the guitar’s pickups."</blockquote>

<blockquote>
"The physical interaction between the pickups and the circuit is difficult to recreate because the pickups are an unknown quantity." [https://forum.fractalaudio.com/threads/what-could-still-be-improved.186167/post-2305651]
</blockquote>

<blockquote>"The one thing no modeler will ever get perfect are fuzz pedals because of the interaction between the pickups and the pedal. The input to a modeler is necessarily buffered so that interaction is impossible to recreate." [https://forum.fractalaudio.com/threads/this-is-why-i-use-pedals-with-axefx-why-do-you.190509/post-2365713]</blockquote>

Forum member AustinBuddy recommends setting Input Impedance to 90K in presets which have a fuzz model as the very first (non-bypassed) block. This doesn't apply to processors with a fixed input impedance.

Read this: [[Input impedance]]

==Tips and tricks==

===Tighten the tone with a Drive block or Input Boost===

A Drive block before the Amp block, with minimal gain, will tighten the low end of dirty amp tones. It also allows turning down gain in the Amp block. This works well in particular with Tube Screamer-based Drive types.

Alternatively, use a PEQ block, set to Blocking, copying High Cut and Low Cut values from a favorite Drive type. This will apply the same coloring as the drive, without the gain and CPU usage.

Firmware Ares and later also provides Input Boost types in the Amp block itself, see above.

===Turn an Amp block into a Drive===

Insert a second Amp block before the main Amp block, turn off its power amp simulation, and you have changed the amp model into a preamp / drive model. Set the main Amp block to a fairly clean tone for best results. Try this with these models: Euro Blue/Red/Uber, Friedman BE, Dizzy, 5153.

More information:
* [http://forum.fractalaudio.com/threads/want-the-mxr-5150-overdrive-pedal-you-got-it-already.106699/#post-1276274 forum discussion]
* [https://www.youtube.com/watch?v=RyMmFOVWjD4 Leon Todd's tutorial]

===Add gain to high single notes with the Pitch Detector===

Attach Pitch (internal controller) to the Drive parameter and use Slope in the modifier menu to fine-tune. This will add gain to single notes when played high on the neck.

More information:
* [http://forum.fractalaudio.com/threads/quick-first-impressions-of-the-axe-fx-iii.136585/#post-1618726 Forum discussion]
* [https://www.youtube.com/watch?v=77EdXNqK178 Leon Todd's tutorial]

===Use a Drive type to warm up or soften a Synth sound===

A Drive type, especially the RAT, is often used (in front of the Synth block) to warm up or often a synth tone.

===Use Tape Distortion to add vintage flavor ===

The Tape Distortion, either before or after the Amp block, can add a vintage flavor to the sound.

===Emulating other drives and devices===

Note: because of ever evolving firmware, the suggested settings in the links below may not be accurate.

Earlier FAS products do not have a model of a Klon Centaur boost/overdrive pedal. Here are ways to approach its sound:
** [http://forum.fractalaudio.com/threads/matching-a-klon-centaur.143242 Camilo Velandia matches a Klon Centaur]
** [http://forum.fractalaudio.com/threads/the-new-austinbuddy-naked-amps-tone-pack-rules.129370/page-4#post-1537261 AustinBuddy's  suggested settings]
** [http://forum.fractalaudio.com/threads/emulating-the-klon-uhh-soul-food.138495 Yek replicates the EHX Soul Food, a Klon clone]
** [http://www.youtube.com/watch?v=V-CZtdKOUwk Leon Todd's AA Workhorse settings (a Klon clone)] 
** PEQ settings to simulate a Klon: band 1 Shelving2, 150 Hz, 0.707, -12, band 5 Shelving2, 2253 Hz, 0.707, -12, Level 1.5
* [http://forum.fractalaudio.com/threads/comp-vs-multicomp.107343 Solo Dallas Schaffer Replica pedal], [http://solodallas.com/the-schaffer-replica more information]
* [http://forum.fractalaudio.com/threads/xotic-bb-preamp-at.133364 Xotic BB preamp AT]
* [http://forum.fractalaudio.com/threads/fet-boost-drive-block-settings-for-the-ep-booster.139115 Xotic EP Booster]
* [http://forum.fractalaudio.com/threads/hendrix-style-axis-fuzz.139730 Roger Mayer Axis Fuzz]
* [http://forum.fractalaudio.com/threads/finally-copyied-the-boss-hm-2-accurately.148981/#post-1801993 Boss HM-2]

=Videos=

[https://www.youtube.com/watch?v=ChzwxGsqxcc Leon Todd demos new Drive types]

=Parameters=

==Mix==

Unlike other effect blocks, Mix at 0% in a Drive block is not equivalent to 100% dry signal ("True Bypass").

<blockquote>"The models let clean through even with the mix at 100%. It depends on the diodes though as to how much clean is mixed. Our models are based on the most common versions." [http://forum.fractalaudio.com/threads/trouble-with-the-bb-preamp-drive-block.85418/#post-1035753]</blockquote>

<blockquote>"The mix control in the Drive block controls the ratio of clean to dirty in the distortion stage. It's not the same as the standard mix control in the other effects." [http://forum.fractalaudio.com/threads/bug-drive-models-in-axefx-iii.140737/#post-1667868] </blockquote>

The Mix control operates prior to any tone control. This lets you mix some dry in with the distorted signal but still maintain overall tone control.

Some players like to turn down the effects’s Mix level (80% or lower) to increase transparency and decrease buzziness.

Note that Mix is different from the Dry Level parameter in diode/opamp-based drive types (see below).

==Sample Rate==

Use Sample Rate Reduction to intentionally allow aliasing, for creative effects.

==Bass Response and Low Cut==

Firmware Ares 13 changed the functionality of Low Cut and has added the Bass Response control. 

<Blockquote>“The Drive block now features a “Bass Response” control for types based on the Rat, Tube Screamer and various derivates. In some models this is duplicated on the Basic page as it is the Bass/Voice/etc. control (and renamed accordingly). This function was previously provided by the Low Cut control. The Low Cut control is now a separate control that allows adjusting the input highpass frequency. Existing presets will automatically be updated with the new default value for the Low Cut control.” </Blockquote>

==Bit Reduce==

Use Bit Reduction to intentionally lower the resolution of the signal, for creative effects.

==Slew Rate / Slew Limit==

This probably refers to how fast the circuit can swing its output. If the signal to be amplified is too fast, the circuit will not be able to perform properly, only amplifying signals below the slew rate limit. Poor slew rate results in high frequencies not passing through the amplifier, and thereby limiting or muting high harmonics.

The Pro Co RAT is known for its poor slew rate, because of the LM308 op-amp being used. [http://www.electrosmash.com/proco-rat-analysis/pedals/distortion/pro-co-rat-distortion.html Read this]

Explanation of Slew Rate in [http://en.wikipedia.org/wiki/Slew_rate Wikipedia]:

* "In electronic musical instruments, slew circuitry or software-generated slew functions are used deliberately to provide a portamento (also called glide or lag) feature, where an initial digital value or analog control voltage is slowly transitioned to a new value over a period of time (see interpolation)"

* "Slew-induced distortion (SID or slew-rate induced distortion) is caused when an amplifier or transducer is required to change output (or displacement), i.e. slew rate, faster than it is able to do so without error. At such times any other signals may suffer considerable gain distortion, leading to intermodulation distortion. Transient intermodulation distortion may involve some degree of SID and/or distortion due to peak compression"

Explanation of Slew-induced distortion in [https://en.wikipedia.org/wiki/Slew-induced_distortion Wikipedia]:

* "Slew-induced distortion (SID or slew-rate induced distortion) is caused when an amplifier or transducer is required to change output (or displacement), i.e. slew rate, faster than it is able to do so without error. At such times any other signals may suffer considerable gain distortion, leading to intermodulation distortion.[1] Transient intermodulation distortion may involve some degree of SID and/or distortion due to peak compression"

Firmware Ares 10.01:

<blockquote>"Changed Drive block Slew Limit to Slew Rate and updated default value of the models. Existing presets will be updated to the new default value upon recall. Note that the parameter now controls the slew rate and lower values equal less high frequency response at high amplitudes and vice-versa (the action is reversed from the previous firmware versions)."</blockquote>

==Graphic EQ==

The 10-band Graphic EQ was added in firmware Ares and later.

The EQ is reset when changing the Drive type.

In firmware Ares 12 and later the EQ can be placed either PRE or POST distortion.

==Dry Level==

Even with Mix at 100%, clean level can pass through diodes. The Dry Level parameter in diode/opamp-based drive types (in firmware Ares 3.02 and later for the Axe-Fx III) determines the amount of clean level that passes through the diodes.

Release notes Ares 3.02:

<blockquote>"This parameter controls the amount of “dry” signal mixed with the “wet” (distorted) signal. For a Tube Screamer-based model this will default to 100% due to the topology. For other types this will default to 0. Values up to 200% are allowed. Note that the dry data is added before any tone controls and therefore is not exactly equivalent to a mix but rather replicates the behavior of analog circuits."</blockquote>

<blockquote>"If the Dry defaults to 100 then it's a Tube Screamer derivative. Tube Screamers use a non-inverting op-amp configuration with diodes in the feedback loop. This results in a transfer function that is Y = X + f(X) where f(X) is the distortion response. IOW they mix the dry signal with a distorted signal."</blockquote>

=Drive models=

==BB Pre (Xotic BB preamp)==

[[file:x_BB.jpg|150px]]

[http://xotic.us/ Xotic] is an American company known for its quality effects, such as the BB preamp, RC Booster, AC Booster, EP Booster and Robotalk, as well as its guitars and basses. Some say “BB” is an abbreviation of “Bluesbreaker”, Marshall’s vintage 2x12 combo amp, used by Eric Clapton in John Mayall’s Bluesbreakers (read more about it in [[Yeks Guide to the Fractal Audio Amp Models]]. Others say it means “Big British”. It's a diode-based pedal with a preamp gain stage that can turn a pristine clean amp into a well-behaved overdriven version. It also smoothens and compresses an already overdriven tone. While the pedal doesn’t sound like a Tube Screamer (there’s no mid-hump) and has much more gain, it is partly based on that circuit. Like all drive types, its sound depends on the amp it’s being used with. 

<blockquote>''"The BB Preamp offers a wide variety of sounds. It’s capable of a 30dB+ clean boost with an adjustable ±15dB two band active EQ which adds a wide range of harmonic content to your ideal sound. The BB also utilizes a pre-gain stage which allows the pedal to go from a very pristine clean to a very smooth, compressed, overdriven sound." [https://xotic.us/effects/bb-preamp Xotic]''</blockquote>

The pedal became popular when Andy Timmons made it his main boost pedal (before switching to MI Audio and JHS). Xotic built him a signature edition. Xotic released several versions of the pedal, with varying amounts of compression as described on [http://www.guitartoneoverload.com/2010/05/03/tube-screamer-alternative-the-bb-preamp/ Guitar Tone Overload]. The pedal is still being manufactured (version 1.5, $170) and remains a popular choice. Around 2017 Xotic reissued an earlier version of the pedal (limited edition), named BB preamp AT (AT = Andy Timmons).

The pedal has four knobs:
* Gain: amount of overdrive (model: Drive). Usable across its entire range
* Volume: output level (model: Level)
* Bass and Treble (model: Bass, Treble): active tone controls, cutting or boosting up to 15dB

Fractal Audio provides two models. One is based on the BB preamp 1.5. The other one on the BB preamp AT.

At default settings into a clean amp, the models replicate an overdriven amp. A moderate Drive setting with Level turned up works well for the amp-in-a-box sound. Set Gain close to 0 to tighten an already overdriven amp or boost a clean amp. If you like the character of the BB Pre model, but prefer a thicker type of sound, try the Esoteric ACB model, based on Xotic’s AC Booster pedal (now discontinued). The model is featured in some factory presets, [https://wiki.fractalaudio.com/wiki/index.php?title=Factory_presets search this wiki page] for “BB Pre”.

Videos:
* [https://www.youtube.com/watch?v=SiW22O914Cg Xotic: Andy Timmons]
* [https://www.youtube.com/watch?v=6nSgj9TLzaU Xotic: Interview with J.D. Simo]
* [https://www.youtube.com/watch?v=L35CpRRCfQ4 Xotic: Interview with Dave Weiner]
* [https://www.youtube.com/watch?v=mbNativSlqI ProGuitarShop: BB Preamp – Strat]
* [https://www.youtube.com/watch?v=Xt8h_r_DIUk ProGuitarShop: BB Preamp – Les Paul]
* [https://www.youtube.com/watch?v=wbJ1YRH7Z6s Sam Vilo: Xotic BB Preamp]
* [https://www.youtube.com/watch?v=wriynGui7EY Prymaxe: Xotic Effects BB Preamp Overdrive]
* [https://www.youtube.com/watch?v=44fiFhdwmZM&t=456s TrueFire: Guitar Sanctuary Featuring Andy Timmons]
* [https://www.youtube.com/watch?v=NsugXtkkuqA&t=431s D’Addario: Andy Timmons’ Guitar Tone Secrets]
* [https://www.youtube.com/watch?v=0bjAotoXjng Mike Hermans: Xotic Effects BB Preamp Andy Timmons]

==BB Pre AT (Xotic BB preamp AT)==

See above.

[[file:BB-AT.jpg|150px]]

==Bender Fuzz (Sola Sound / Vox Tone Bender)==

[[file:x_Bender.gif|150px]]

The classic Tone Bender fuzz originates from the ‘60s and was designed and manufactured by [http://www.macaris.co.uk/ Macari’s / Sola Sound] in the UK. The Tone Bender name was used for their series of fuzz boxes. Sola Sound and Vox Tone Benders are basically the same thing because the Sola design was licensed to JMI/Vox. Sola Sound also built the Colorsound range of effects, including the famous wah pedal (also provided as a model) and several different versions of the Tone Bender. Jimmy Page used a Tone Bender when recording Led Zeppelin’s Whole Lotta Love, as demonstrated in the documentary [https://www.youtube.com/watch?v=zYCuqxg3RKM “It Might Get Loud“]. The Beatles, Jeff Beck in [https://www.youtube.com/watch?v=pM1qZBFiOLU The Yardbirds] and Eric Clapton have used it too.

According to [https://en.wikipedia.org/wiki/Tone_Bender Wikipedia], the first Tone Bender design (MK1) was based on the Maestro fuzz and contained three transistors. The second edition, later named MK1.5, had two transistors and was a negative feedback amplifier; the Arbiter Fuzz Face and Vox/JMI Tone Bender are based on it. The Professional MKII edition contained three transistors again; it was a MK1.5 model with an additional gain stage, and probably is the most popular and most-copied design. The MKIII (the inspiration for [https://www.fulltone.com/pedals/fuzz Fulltone’s Soul-Bender]) had an additional tone control and was followed by the MKIV. There are many clones on the market. The Colorsound “Supa” Tone Bender (1973) used silicon transistors and was based on the “Ram’s Head” Big Muff.

<blockquote>''"The Tone Bender MKI.5 is said to be the first circuit type used in any Sola Sound sand cast enclosure and the only Tone Bender made with two germanium transistors. So sonically what can you expect? The tone is a little heavier and denser when compared to that of the Professional MKII. Has some of that beefy woolliness of a good germanium Fuzz Face but still has enough cut and shove to not completely loose it in the mix. The saturation levels are lower too so works pretty neat for driving a big ballsy amplifier over the edge but never to the extent that things completely fall apart.''</blockquote>

<blockquote>''Some would say that it all about the place it holds in the world of rock’n’roll. When I demo a MKII in the shop these days I am still blown away by the sound – for me it is the epitome of great guitar tone – loads of headroom, warm fat crunch through to aggressive rock tones suitable for downtuning, then back off your volume and there are all those huge blues tones. That’s today... what it must have been like back in 1964 I can only imagine – It must have been like a spaceship landing – most people walking into Macaris back then would have only heard a fuzzbox on record – this pedal played through an old Marshall or Selmer or Vox – well, for a guitarist, it must have been life changing." [https://www.macaris.co.uk Macari's]''</blockquote>

Many clones and replicas exist. D*A*M Stompboxes still builds authorized authentic reissues.

<blockquote>''“The first commercially made fuzz box to hit the UK market was the golden coloured, wedge shaped; three transistorized Gary Hurst designed Tone Bender. The Tone Bender was released in September 1965 and sold for 14 guineas, approximately £185 in today’s worth. The Tone Bender was a big hit and quickly drew big name players to a growing rank of users. The Yardbirds, The Who, The Pretty Things, The Merseybeats, The Ivy League and a rather popular band from Liverpool called the Beatles were among users of the Tone Bender. Guitar player with a Hull based band called the Rats also used this original Tone Bender as his primary fuzz sound for many years. This Guitar player was Mick Ronson who as we know went on to play lead guitar alongside a certain David Bowie. This first incarnation of the Tone Bender was only made for a relativity short time period before the design of the pedal was significantly changed.''

''Following the success of this first Tone Bender, which we will refer to as the MKI, it was clear that the design of the pedal needed to be geared towards being a more readily produced item. Early in 1966 a new improved Tone Bender arrived on the scene, this version of the Tone Bender has become known as the MKI.5. This new design was much more modern & futuristic in appearance and was also more ergonomic in its aesthetics, more space ship like in appearance than the tank like appearance of the MKI. The new improved Tone Bender enclosure was manufactured using a sand casting process and was finished in a silver/grey hammertone paint. The new Tone Bender was, like its predecessor, named only as a ‘Tone Bender’. The silk screening on the enclosure only featured the pedals name; the labelling for the controls and the input & output sockets, no company information was featured.''

''The internal construction style of the MKI.5 is of the same style that followed through into the build technique of the MKII’s. The MKI.5 utilised isolated jack sockets as to avoid ground loops, a feature used on all Tone Benders and most other quality British made effect pedals from the 1960’s. A technique unfortunately that is seldom used today. All the early Tone Benders, right up to the introduction of the MKIII, also relied heavily on the use of shielded cabling throughout. Again, a very good construction technique and yet again little seen in use today. Interesting side note, true bypass switching that is often seen as a modern feature to ‘boutique’ builders was actually first seen used in the Tone Bender MKI.''

''The earliest MKI.5 Tone Bender I seen featured two IMPEX S3-1T Germanium transistors. Possibly have been prototype unit? Commonly the MKI.5 along with a large percentage of MKII Tone Benders used the British made Mullard OC75’s. The two transistor arrangement of this type of circuit is called a voltage feedback biasing circuit. Interestingly, several fuzz boxes that first made their appearance in the year 1966 used this very same set-up. The Arbiter Fuzz Face, the Vox Tone Bender, Vox Distortion Booster and the Sola Sound made Tone Bender MKI.5. Possibly a happy coincidence? But more likely inspired by the popularity of the originator." [http://www.stompboxes.co.uk/ D*A*M Stompboxes]”''</blockquote>

More information:
* [http://www.bigmuffpage.com/The_Tonebender_Timeline.html The Tone Bender Timeline]
* [https://en.audiofanzine.com/fuzz-pedal/editorial/articles/legends-the-history-of-the-great-fuzz-pedals.html#nbsp-a-href-fuzz-pedal-sola-sound-tone-bender-mki-sola-sound-tone-bender-1965-a Audiofanzine: The History of the Great Fuzz Pedals]
* [https://www.premierguitar.com/articles/26258-face-the-fuzz-a-beginners-and-skeptics-guide-to-fuzz-pedals Premier Guitar: Face the Fuzz: A Beginner’s and Skeptic’s Guide to Fuzz Pedals]
* [https://www.premierguitar.com/gear/fifty-years-of-filth-the-story-of-the-mighty-tone-bender-fuzz Premier Guitar: Fifty Years of Filth — The Story Of The Mighty Bender Fuzz]
* [https://www.youtube.com/watch?v=SkzHNpQ7QCA&t=417s Rhett Shull: Macari shop story]
* [https://www.ultimate-guitar.com/articles/features/brief_history_of_fuzz_effect_and_5_most_important_vintage_fuzz_pedals-94813 Ultimate Guitar Com: Brief History of Fuzz]
* [https://www.tonehome.de/jmi/ ToneHome]

The most popular Tone Bender designs are simple pedals with just two knobs:
* Level: output level (model: Level)
* Attack: amount of fuzz (model: Drive)

So far, it’s unknown which circuit has been modeled by Fractal Audio. But it doesn’t really matter: the Bender Fuzz model sounds great. While real Tone Bender pedals contain germanium transistors, the Clip Type parameter in the model is set to “Hard”, representing the circuit’s hard clipping. It is a versatile fuzz model. It can be used with a clean amp, where it will sound punchy, or with an amp with a lot of power amp distortion (e.g. Plexi), capable of filling the room and flooring the audience, making modern high-gain amps hide sheepishly in a corner. It can even be used with amps with lots of preamp gain, and with bass guitar. At high Drive settings, notes on the low E-string get spitty, like an imminent implosion to happen. Dialing in the model is as simple as putting it before or after a clean or slightly dirty Marshall amp model, turning the Drive control to the desired position, and using the guitar’s volume knob to control the amount of fuzz. Turn up Drive and Level for crushing distortion, reminiscent of Ian Thornley of Big Wreck. For a milder fuzz tone, turn down Drive. For more information about the interaction between the guitar and fuzz models, refer to the notes earlier on this page. The model is featured in some factory presets, [https://wiki.fractalaudio.com/wiki/index.php?title=Factory_presets search this wiki page] for “Bender”.

Videos:
* [https://www.youtube.com/watch?v=NR0ST5L8-WE Sola Sound Tone Bender Fuzz]
* [https://www.youtube.com/watch?v=CqCwh8rCoHU Macari’s: The Tonebender]
* [https://www.youtube.com/watch?v=mbBAI-BuP4M Which JMI Tone Bender is Right For Me?]
* [https://www.youtube.com/watch?v=LUBUmO7grAg Sola Sound Professional MKII Tone Bender]
* [https://www.youtube.com/watch?v=70akj3s2jnk Pete Thorn: Ramble FX Twin Bender Fuzz demo]
* [https://www.youtube.com/watch?v=5N9CXOUnNrk Original 1973 Sola Sound Tone Bender fuzz]
* [https://www.youtube.com/watch?v=jnSuu_QVYsM British Pedal Company: MKI Tone Bender Demo]
* [https://www.youtube.com/watch?v=fK8hceyZa0w British Pedal Company: MKII Tone Bender Demo]
* [https://www.youtube.com/watch?v=szeecBoEEOU British Pedal Company: MKI.5 Tone Bender Demo]
* [https://www.youtube.com/watch?v=DY9Yquz4fxs British Pedal Company: MKIII Tone Bender Demo]
* [https://www.youtube.com/watch?v=SkzHNpQ7QCA&t=743s Rhett Shull: The Best Fuzz Pedal I’ve Ever Played]
* [https://www.youtube.com/watch?v=f6TRH16A0pk JHS Pedals: My Most Valuable Pedals (2018)]
* [https://www.youtube.com/watch?v=XTGmfsKHcXo JHS Pedals: History Of Guitar Distortion]
* [https://www.youtube.com/watch?v=skEYdG8MTto&t=1040s JHS Pedals: 10 Rare Pedals]
* [https://www.youtube.com/watch?v=iBjXiNVTWZI&t=321s JHS Pedals: The First Guitar Effects Ever]
* [https://www.youtube.com/watch?v=ao1aMtB6kAI JHS Pedals: How to Find the Fuzz Pedal You Need]
* [https://www.youtube.com/watch?v=6-1oIJe07WM Colorsound Supa Tonebender]

==Bit Crusher (custom model)==

Custom model, which warms up a sound or deliberately degrades a signal by reducing number of bits or sample rate

==Blackglass B7K (Microtubes B7K)==

Model of the analog bass preamp from Darkglass, famous for its overdrive and transparency

[[file:x_B7K.jpg|250px]]

==Blues OD (Bluesbreaker (Mk1)==

Model of the original Marshall Bluesbreaker pedal, Mk I, which produces the mildly overdriven valve sound of the 2x12 Marshall combo amp, used by Eric Clapton in John Mayall’s Bluesbreakers

[[file:x_BBmk1.png|125px]]

==Bosom Boost (Friedman Buxom Boost)==

Model of Friedman's clean boost pedal

[[file:Buxom.jpg|100px]]

==Box o'Crunch (Crunch Box V1)==

Model of this popular "Marshall-in-a-box" pedal from MI Audio

[[file:x_Crunchbox.jpg|100px]]

==Compulsion Distortion LP (OCD)==

Model of the popular Fulltone "Obsessive Compulsive Drive" OCD pedal, in Low Peak mode

[[file:x_OCD.jpg|150px]]

==Compulsion Distortion HP (OCD)==

Above, in High Peak mode

==DS1 Distortion (DS-1 Distortion)==

Model of the popular BOSS distortion pedal, used by Steve Vai, Joe Satriani, Kurt Cobain

[[file:x_DS1.jpg|100px]]

==DS1 Distortion Mod (modded DS-1 Distortion)==

Model of a modded version of the BOSS DS-1

<blockquote>"I didn't model it based on any actual pedal. I made the model by taking the DS-1 and applying the Keeley "Seeing Eye" and "Ultra" mods." [https://forum.fractalaudio.com/threads/the-new-ds1-mod-is-unbelievably-good.168264/#post-2021098]</blockquote>

[[file:x_DS1.jpg|100px]]

==Esoteric ACB (AC Booster)==

Model of this thick, light-to-medium overdrive ("Almost Clean") from Xotic

[[file:x_AC.jpg|100px]]

==Esoteric Bass RCB (Bass RC Booster)==

Model of Xotic's boost pedal for bass

[[file:RC-Bass.jpg|100px]]

==Esoteric RCB (RC Booster v1)==

Model of the Xotic "Real Clean" transparent boost pedal

[[file:x_RC.jpg|100px]]

==Eternal Love (Eternity)==

Model of this clean boost, overdrive and treble booster from Lovepedal

[[file:x_Eternal.jpg|140px]]

==Face Fuzz (Fuzz Face)==

Model of the Dallas Arbiter fuzz

[[file:x_Fuzzface.png|125px]]

==FAS Boost (custom model)==

Custom model, designed to boost vintage amps like Plexis

==FAS LED-Drive (custom model)==

Models LED clipping distortion

==Fat Rat (modded RAT)==

Model of a modded RAT that sounds fuller and smoother

[[file:x_RAT.jpg|120px]]

==FET Boost (custom model)==

Models gentle and smooth FET clipping

==FET Preamp (custom model)==

Model of a FET preamp, possibly similar to BOSS' FA-1 FET Amplifier

[[file:x_FA1.png|100px]]

==Full OD (Full-Drive 2)==

Model of the thicker and darker variant of the Tube Screamer, from Fulltone

[[file:x_FD2.jpg|170px]]

==Griddle Cake (Hot Cake)==

Model of Paul Crowther's overdrive from New Zealand makes a great match with VOX amplifiers

[[file:HotCake.jpg|125px]]

==Hard Fuzz (custom model)==

Model of a hard-clipping 60s-style fuzz

==Heartpedal 11 (OD11/Amp Eleven)==

Model of a Lovepedal pedal that sounds like an overdriven tube amp

[[file:x_Amp11.jpg|200px]]

==Hoodoo Drive (Voodoo Lab Overdrive)==

Model of this vintage overdrive

[[file:x_Hoodoo.jpg|125px]]

==Horizon Precision Drive (Precision Drive)==

Model of the Horizon Devices pedal that sculpts metal and djent tones

[[file:x_Precision.png|100px]]

==Jam Ray (Jan Ray)==

Model of this expensive boutique boost/overdrive from Vemuram that replicates the tone of driven blackface Fender amps from the '60s

[[file:x_Jam.jpg|100px]]

==Klone Chiron (Klon Centaur)==

Model of the most boutique (expensive) boost/overdrive ever

[[file:Klon.jpg|180px]]

==M-Zone Distortion (MT-2 Metal Zone)==

Model of the classic pedal from BOSS that gets crushing metal tones from any amp, love it or hate it

[[file:x_MT.jpg|100px]]

==Master Fuzz (Maestro Fuzz-Tone FZ-1A)==

Model of the Maestro fuzz pedal, used in "(I Can't Get No) Satisfaction"

[[file:x_Maestro.jpg|140px]]

==Maxoff 808 (Maxon OD-808)==

Model of Maxon's OD-808 overdrive, a close replica of the original Ibanez TS9 Tube Screamer, but smoother and with less midrange honk

<blockquote>"Maxon sounds a bit different due to the different op-amp and diodes. Smoother and less midrange honk." [https://forum.fractalaudio.com/threads/maxon-od808.176967/post-2152725]</blockquote>

[[file:x_OD808.jpg|175px]]

==MCMLXXXI DRV (1981 Inventions DRV)==

Model of this Pro Co RAT clone with different pre-distortion shaping

[[file:x_1981.png|185px]]

==Micro Boost (Micro Amp)==

Model of the popular MXR clean boost from the '80s

[[file:x_Micro.png|100px]]

==Mid Boost (custom model)==

Custom model that boosts the middle frequencies

==Octave Distortion (Octavia)==

Model of the well-known octave-up fuzz from Tycobrahe, made famous by Jimi Hendrix

[[file:x_Octavia.jpg|120px]]

==OD 250 (Overdrive Preamp 250 reissue)==

Model of the reissue of this DOD overdrive that pushes an already driven amp

[[file:x_OD250.jpg|150px]]

==OD 250 Gray (Overdrive Preamp 250: original gray version)==

See above

==OD-One Overdrive (Boss OD-1)==

Model of the grandfather of overdrive pedals

[[file:OD-1.jpg|100px]]

==PI Fuzz (Big Muff Pi Triangle)==

Model of the famous saturated fuzz from Electro-Harmonix

[[file:x_Pi.jpg|130px]]

==Plus Distortion (Distortion +)==	

Model of this old MXR distortion box that gets more distortion from an already overdriven amp

[[file:x_Plus.jpg|100px]]

==Rat Distortion (RAT)==

Models of Pro Co's famous black distortion box

[[file:x_RAT.jpg|120px]]

==SDD Preamp (Korg SDD-3000 preamp)==

Model of the preamp in Korg's rackmount SDD-3000 digital delay, used by The Edge

[[file:x_SDD.jpg|400px]]

==Shimmer Drive (custom model)==

Custom model, designed to boost models of vintage non-Master amps (Plexi, Vox, Fender)

==Shred Distortion (Shred Master)==

Models Marshall's distortion pedal for shredders

[[file:x_Shred.jpg|135px]]

==Sonic Drive (Sonic Distortion SD-9)==

Models the distortion pedal from Ibanez that's popular among fusion players

[[file:x_SD9.jpg|125px]]

==Suhr Riot Ge (R) (Riot)==

Models Suhr's amp-in-a-box pedal, set to Germanium voicing (switch to the right)

[[file:x_Riot.jpg|100px]]

==Suhr Riot LED (L) (Riot)==

Models the pedal set to LED voicing (switch to the left)

[[file:x_Riot.jpg|100px]]

==Suhr Riot LED/Si (M) (Riot)==

Models the pedal set to hybrid LED/Silicon Diode voicing (switch in the middle)

[[file:x_Riot.jpg|100px]]

==Super OD (SD-1 Super OverDrive)==

Models the competitor from Boss to the Tube Screamer, popular with high gain players

[[file:x_SD1.jpg|100px]]

==T808 OD (TS-808 Tube Screamer)==

Models the venerable Ibanez TS-808 Tube Screamer

[[file:x_TS.jpg|100px]]

==T808 Mod (modded TS-808 Tube Screamer)==

Models a modded TS-808 for more bass, more gain, more transparency

[[file:x_TS.jpg|100px]]

==Tape Distortion (tape distortion)==

[[file:TDST.png|125px]]

Models the clipping of an overdriven reel-to-reel Ampex tape deck

==Timothy Down (Timmy)==

Models this popular transparent boost/overdrive pedal (blue), designed by Paul Cochrane, with the clipping mode switch set to bottom position (symmetrical clipping, less headroom/diodes)

[[file:x_Timmy.jpg|90px]]

==Timothy Mid (Timmy)==

Clipping mode switch in middle position (symmetrical clipping)

[[file:x_Timmy.jpg|90px]]

==Timothy Up (Timmy)==

Clipping mode switch in top position (asymmetrical clipping)

[[file:x_Timmy.jpg|90px]]

==Tone of Kings (King of Tone)==

Models this sought-after variant on Marshall's Bluesbreaker pedal from Analog Man

[[file:x_KoT.jpg|175px]]

==Treble Boost (silicon treble booster circuit)==

[[file:x_Treble.jpg|175px]]

Models a silicon-based treble booster

==TS9DX + (TS9DX Turbo Tube Screamer)==

Models the Ibanez Turbo Tube Screamer in Plus-mode

[[file:x_TS.jpg|100px]]

==TS9DX Hot (TS9DX Turbo Tube Screamer)==

Models the Ibanez Turbo Tube Screamer in Hot mode

[[file:x_TS.jpg|100px]]

==Tube Drive 3-knob (Tube Driver)==

Models the version of this pedal (which has a 12AX7 tube inside) with 3 knobs

[[file:x_TubeDriver.jpg|120px]]

==Tube Drive 4-knob (Tube Driver)==

Models the version of this pedal (which has a 12AX7 tube inside) with 4 knobs, used by Eric Johnson

[[file:x_Tube4.jpg|120px]]

==Valve Screamer VS9 (Tube Screamer TS9)==

Models the famous original Ibanez TS9 Tube Screamer

[[file:x_TS.jpg|100px]]

==Zen Master (Zendrive)==

Models the famous "Dumble-in-a-box" pedal, used by Robben Ford

[[file:x_Zen.jpg|100px]]

[[category:Axe-Fx2]]
[[category:Axe-Fx3]]
[[category:FM3]]
[[category:FM9]]
[[category:AX8]]
[[category:FX8]]
[[category:Sounds]]
[[category:All]]