Crossfade between Sampler filters in MainStage
You can use Filter Blend to affect Sampler signal flow. The figure illustrates the signal flow between the signal mix stage (pre-Filter) and the dynamic stage (the Amplifier). The signal flow through the filters and the filter overdrive circuit (the Drive parameter) are dependent on the Filter Blend setting. See Sampler Synth pane.
In a parallel configuration, the overdrive/distortion circuit—the Drive parameter—is always wired before the filters. The filters receive a mono input signal from the output of the overdrive circuit. The outputs of both filters are mixed to mono via Filter Blend.
The Filter Blend parameter is available as a modulation target in the Mod Matrix pane. You can use manual control sources, such as the modulation wheel, to change the filter blend; but the Filter Blend target can also be used creatively, to rapidly switch or smoothly fade between the two filters, using an LFO or velocity, or both, as a modulation source.