Here it is: Quantum Firmware 1.00.

As mentioned before in our Public Beta article, the Firmware Number cycle has been reset from 19 and we’re back at 1.00!

Axe-Edit was updated earlier today (3.3.0) as well and fully supports all the new functions of Quantum FW 1.00, so be sure to update Axe-Edit as well if you are installing this new Firmware.

A note from FAS: “For those previously running the public beta of Quantum with Axe-Edit, please choose “Refresh after new FW” from the Settings menu in Axe-Edit 3.3 to get the latest block definitions.”

We finally have some official Release Notes where FAS tells us what to expect with this new firmware!

We will update this post with more details as we find them. For now, you can view an excerpt from my live stream where a bunch of us tried to guess what was different in the Public Beta 2 weeks ago. (I will say I did a full-band, LOUD gig the other day with Quantum FW1 Public Beta, and it’s the best my Axe has ever sounded – straight to the PA using their monitors!):

FAS Thread


Note that these links are direct links provided by Fractal Audio. If these links no longer work, FAS has removed the files. At this time, does not store Firmware and other files. Please visit the Archive at to look for older versions.

Release Notes

[Bold Text was added by us to denote brand new notes, i.e. not something like Dephase from previous Beta firmware]

  • This is the initial release of our “Quantum” firmware. Quantum represents a milestone in amplifier modeling technology. Our new Real-Time Spice (RTS) algorithms offer a degree of accuracy not found in any other product. Below are the significant changes/additions from the previous non-Quantum firmware.
  • Added “Dephase” control to Cabinet block. This parameter controls a sophisticated process that removes the “phasiness” from IRs and can yield a more “in the room” experience. Note that the processing required is extreme and the control can have some lag. No extra CPU usage or audio latency, however, is incurred. [Dephase was first seen in Public Beta 19.01]
  • New RTS triode models. There are three new triode models based on our new algorithms: 12AX7A (default), ECC83 and 7025. The previous models are still available and may be selected with the Pre Tube Type parameter. Note that the models have all shifted and if you were using a model other than default previously you will need to adjust your preset to the desired model.
  • The “CF Comp” parameter has been renamed “Preamp Comp” to better explain its function.
  • Added new Preamp Compressor Type “Comp Type” parameter to amp block. There is a new menu page that contains Preamp Comp, Comp Type, Dynamics, Preamp Bias and Output Level (the last repeated from other menus for convenience). Preamp Comp Type selects between “Authentic”, which accurately models the compression in a tube amp, and “Ideal” which is an idealized distorting compressor. The idealized type is more focused and has tighter bass whereas the authentic type is bolder and looser. High gain players may prefer the ideal type due to its tight character.
  • Added a new mode to the “Character” controls in the Amp block. A Char Type of “Dynamic” engages an exciting new mode of tone control. This can be used to fatten or scoop the tone as a function of picking strength. For example, set the Type to Dynamic, Char Freq to 450.0, Char Q to 0.7 and Char Amt to 4.0. This will cause the tone to get fatter and thicker as you play hard but without getting honky when playing soft. [This was first seen in Public Beta 19.01]
  • Added four “JMPre-1” models based on a Marshall JMP-1 rack preamp. The existing “Brit Pre” model was not changed as it is used by several prominent “A-list” artists. Instead, four new models were added. The models with “BS” in the name indicate that the Bass Shift function is engaged. Note that the model defaults to the power amp simulation active. The power amp model is based on a typical Marshall 100W power amp of that era.[This was first seen in Public Beta 20.00]
  • Added 512 more User Cab slots to XL and XL+ models. [This was first seen in Public Beta 20.00]
  • Added 20 new Cabinet models (XL and XL+ versions only) from our Universal Noise Studios 4×12 cabinet pack. These IRs are specifically intended to be used in mixes “in the box”. Mix two IRs from each cab for a myriad of sonic textures. 
  • Fixed Dry Delay Shift parameter not working in Flanger block. The parameter has been renamed to Dry Delay and works differently (and more intuitively). The parameter now sets the delay time of the dry signal as a percentage of the maximum delay time of the wet signal. For classic thru-zero flanging this parameter should be set to 50%. For interesting new sounds experiment with lower or higher values. Note that this parameter has no effect if Through Zero is set to Off. [This was first seen in Public Beta 19.01]
  • Fixed smallest LCD font having a smiley face for left bracket character.
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Chris is a guitarist and drummer in Honolulu, Hawaii. He has been using the Axe-Fx since 2007, starting with an Axe-Fx Ultra, and now the Axe-Fx II. He has been helping people successfully use their FAS gear for years and the creator of many video tutorials as Katsu Kuri Media.

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