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Fractal Audio · Axe-Fx III · Cygnus

Axe-Fx III

A rackmount processor built around a 14x6 stereo grid, with two amp and cab pairs per preset, eight scenes, and four independent channels inside every block. Extremely deep and, unusually for its class, driven from a front panel rather than from footswitches — those are a separate purchase.

If yours is a floorboard with nine switches it is an FM9; with three, an FM3. If it uses X and Y rather than channels A to D, it is an Axe-Fx II, a different generation running Ares rather than Cygnus.

Everything in this guide

Controls

Every front-panel control on an interactive diagram, and what the FC controllers add.

Inputs and outputs

Every jack on an interactive rear panel — four inputs, three stereo outputs, Humbuster and FASLINK II.

Specifications

The numbers that answer a question, with the FM9 and FM3 comparison where they differ.

Scenes and channels

The two axes that make one Fractal preset replace a dozen — and the concept Helix has no equivalent of.

The grid and CPU

14 by 6, all stereo, and a CPU budget you manage rather than fixed caps you hit.

What the effect names really are

Every model Fractal themselves describe — and an honest account of the ones they don't.

Levels

Input trim, output level and preset level do three different jobs. The first one does not change your tone, however much it looks like it should.

Cabs and user IRs

What a User Cab is, how to get one onto the unit, and the file extension that looks right and does nothing.

Rig setup

Studio, live with an FC, into a real amp, or both at once.

MIDI

Why Fractal MIDI works differently from everyone else's, and the mapping that lets a one-message controller drive a scene-based rig.

Questions and answers

Straight answers to the things people actually ask.

Troubleshooting

Symptom, cause, fix — including what is documented behaviour rather than a fault.

Firmware and backups

Presets live in banks of 128, so backing up "your presets" usually backs up a quarter of them. Plus the version note that saves you later.

Glossary

Grid, scene, channel, shunt, Humbuster, FASLINK, Cygnus, Ares.