Expander module for the WMD Performance Mixer.

This module gives you mute control over each channel of the Performance Mixer including the master Aux Sends and even the two extra stereo channels provided by the PM Channels Expander. Also adds voltage control over the Aux Send level for the first 4 channels on the Performance Mixer. All action happens on release. Combo button: Hold down and select multiple channels to mute upon release.