So here are the parts of the FM3 manual that say Axe Fx III only. This reminds of the differences between the AX8 and Axe Fx II.
So no surprises here. We do have USB audio now.
One question is about the USB type A slot on FM3. Anyone? This is not mentioned in the manual.
INPUT USB (AXE-FX III ONLY)
The Input USB block is fed signal from the USB Outputs 7+8 ports of a connected computer. There are many
creative applications for the Input USB block such as creating āhardware pluginā chains via USB, or processing
backing tracks and live guitar through āmasteringā effects. See your Ownerās Manual for more on USB Audio.
INPUT 1/INSTRUMENT IMPEDANCE (AXE-FX III ONLY)
The Input Instrument Impedance parameter appears on the Input 1 block. This parameter changes the actual
analog circuitry of the INSTR input jack to interact differently with your guitar pickups. This recreates the way that
some classic effects (e.g. āVibe) āload downā the pickups, causing a change in frequency response. In āAUTOā
mode, the impedance is set automatically, based on the first active effect to follow the input. Normally the setting
of āAUTOā is best, but you may also select any of the following values. This setting is saved with the channel.
1MĪ©
1MĪ©+ Capacitor
230kĪ©
230 kĪ© + Capacitor
90 kĪ©
90 kĪ© + Capacitor
70 kĪ©
70 kĪ© + Capacitor
32 kĪ©
32 kĪ© + Capacitor
22 kĪ©
22 kĪ© + Capacitor
Bias Trem Frequency, Bias Trem Depth ā (Axe-Fx III Only) These create true bias tremolo by varying the bias
of the virtual power tubes. Bias Tremolo varies based on a multitude of variables including power amp settings,
damping, bias parameters, and more. It is also āself-duckingā and decreases as you play harder. On some amp
types, extreme bias depth can result in excessive crossover distortion. On other amps the amount of tremolo can
vary greatly between loud and soft playing. All this, however, is part of the allure of bias tremolo as it results in a
particularly organic sound. The sound of Bias Trem is available on the FM3 via the Tremolo/Pan block (p. 91).
Smoothing ā (Axe-Fx III Only) Reduces the prevalence of notches and peaks that are characteristic of a micād
speaker. Some may find this effect brings the sound closer to that of a cab āin the room.ā
IR Length ā (Axe-Fx III Only) Sets the length of the IR. Lower values can result in decreased low end detail and
resonance, but will also reduce CPU and potentially increase clarity by eliminating any reflections in the IR itself.
THE CROSSOVER BLOCK Axe-Fx III Only
THE IR PLAYER BLOCK Axe-Fx III Only
Looper
On the Axe-Fx III, the maximum time is 300 seconds. On the FM3 the maximum time is 120 seconds.
THE REALTIME ANALYZER BLOCK Axe-Fx III Only
THE TONE MATCH BLOCK Axe-Fx III Only
THE VOCODER BLOCK Axe-Fx III Only