Axe-Fx II (legacy)

User contributions

Manufacturing the Axe-Fx II

• The Axe-Fx II is made in USA. All units are identical for all global regions and supports 100-240V. Source
• The MFC-101 is designed in USA and made in China. The Axe-Fx II is made in U.S. Source
• Some manufacturing information can be found by reading Liam's posts.
• Cliff: "The Axe-Fx II is a no-compromise product and that is reflected in the price. Most, if not all, manufacturers use, for example, TL074 op-amps for the analog I/O. Those are inexpensive, quad, FET input op-amps with okay performance. They cost about a ten cents each. We use high-end Analog Devices products that cost about a dollar for a dual. These are reference-grade amps. We use film capacitors where possible in critical signal path locations. Again, much more expensive but reference-grade performance. The A/D and D/A converters are reference-grade. Even the circuit board has gold-plated pads as compared to tin." Source
• Cliff: "The Axe-Fx II is "Made in USA" as much as anything can be nowadays. There is basically no component manufacturing left in the US. I believe there are some American companies that make axial film capacitors and maybe certain specialty ICs but the vast majority of components are now made in Asia. The unit itself is assembled and tested in the US which is virtually unheard of for a consumer electronics product. I still believe that outsourcing is detrimental to our county in the long run." Source

Axe-Fx II power supply

• Power supply specifications
• Cliff: "The power supply is quite over-spec'd. The unit only requires about 25W but I spec'd a 40W supply to ensure longevity under difficult operating conditions." Source

Axe-Fx II weight and dimensions

• Cliff: "17 lbs. 22 x 18 x 8 inches." Source

Axe-Fx II Mark II model

• The original model has been replaced with a Mark II model (October 2012). The only change is the addition of an EtherCon jack, replacing the standard RJ45 port for connecting an MFC-101. This is in line with the MFC-101 Mark II version. EtherCon offers built-in strain protection to guard against damage from CAT5 cable pulls or jolts. It's backward compatible with standard EtherCon cables, however EtherCon is recommended for harsh environments.
• Cliff: "The only difference is the connector. The connectors are backward and forward compatible. The problem was that people were breaking the connectors, especially on the MFC. So we changed them to more durable connectors." Source

Racking the Axe-Fx II

• The Axe-Fx II is a 19” 2U device. It can be mounted in a rack or rackbag. If necessary combined with things like a racked power amp, a power conditioner etc. Rear rack rails are not required or supported. It's about two inches deeper than the Standard and Ultra.
• If you need a custom rack panel to bring the outputs to the front, read this thread.
• The rack ears at the front are removable if you need the space. Source
• You can put the rack or bag on a stand such as this one or this one.
• Cliff: "From the rack ears to the back of the chassis is only 13". You should allot a couple inches for plugs and cables though." Source

Axe-Fx II serial number

• Units with CC numbers were assembled by Cliff himself. The 5 numbers are an internal work order number. The XX indicate the batch number and the #X indicates what unit from that lot was produced. This shows who built and inspected each unit prior to going to Fractal for final inspection and burn-in. L or LF indicate the units that were built lead-free (CC#s are also lead free), and the motherboard will have an e1/e1 sticker as well. Source1 Source2

Frequency response of the Axe-Fx II

• The frequency response of the Axe-Fx is flat, see above, and read this.
• Read more about frequency response in Wikipedia.

Converters inside the Axe-Fx II

• Cliff: "We use the flagship Cirrus converters along with Analog Devices "Butler" op-amps. Film caps where possible. All I/O to the converters is balanced to provide optimum SNR and distortion performance. One of our op-amps costs ten times what is commonly found in other products." Source

Axe-Fx II aliasing

• You can read more about aliasing in this thread.