August 2025: pages F-Z have been reviewed. Pages A-E are next
Input block
Contents
Input block
Axe-Fx III: 5 blocks, including Input USB, 4 channels
FM9: 4 blocks, including Input USB, 4 channels
FM3: 2 blocks, 4 channels
VP4: 1 section, no channels
Axe-Fx II, AX8: 1 block, no X/Y
FX8: no
About the Input block
The Input block is the spot where the digitized audio signal enters the grid. The Axe-Fx, FM9 and FM3 have multiple inputs. The VP4 has a single input.
The Input block also provides these functions:
- Noise gate
- Input impedance (not on FM3 and AX8)
On the Axe-Fx III, FM9 and FM3, the Input block can also operate as an effects return in an effects loop. See below.
Position on the grid
- Axe-Fx III, FM9 and FM3
- The Input blocks can be positioned anywhere on the grid
- Axe-Fx II, AX8, FX8, VP4
- The Input block is fixed at the start of the grid
Input source
The Input blocks are linked to the hardware analog input ports.
On the Axe-Fx III, FM9 and FM3, inputs can also be linked to digital input. Read this: Setup menu
The Axe-Fx III and FM9 also have an Input USB block. This gets its input signal from USB Outputs 7+8 from a computer. It can be placed anywhere on the grid.
The Multiplexer block can connect directly to a physical input port, without requiring an Input block in between.
Instrument level
The Level parameter in the Input block has a modifier. This lets you adjust presets to the output level of a specific guitar, using a pedal or switch.
Noise gate
Each Input block has its own noise gate. Read this: Noise gate
Effects loop
On the Axe-Fx III, FM9 and FM3, the combination of an Output block and Input block operates as an Effects Send/Return loop. Read this: Effects loop
Global blocks: Input 1 only
The Input 1 block can be configured as a Global block on devices which support Global blocks. The other Input blocks do not support this.
