At the righthand side of the bottom bar in the interface, FabFilter Micro contains independent
input and output gain parameters.
The Input Gain parameter sets the gain that is applied before the signal
enters the filter. You can use this to amplify the signal so it saturates the filter more or
less, adjusting the amount of distortion.
The Output Gain parameter sets the gain that is applied after the filter.
If you have amplified the incoming signal with the Input Gain parameter, you can use the Output
Gain to attenuate it again to obtain a reasonable output level.
Hold down the Alt key while dragging to adjust both levels simultaneously, but in
reverse direction. This lets you easily change the distortion level in one step.
You can directly adjust the output gain by clicking and dragging the output button
vertically, so there is no need to click it first to view the output knobs. All keyboard
modifiers that work on knobs also apply here. See Knobs for more
When the output knobs are visible, you can double-click them to be able to enter a value
directly using the keyboard.