The Alpha Switch is a 2HP expander to the Alpha Pro VCA.

AlphaSwitch breaks out the function links on the back of the Alpha Pro to four switches:

1) Signal Inputs: DC or AC coupled
2) Pan CV: No zero crossing detection, or zero crossing follows XING switch
3) Overdrive Position: With the system set to mono mix, this switch sets whether the overdrive circuit comes pre or post the mix buses
4) Stereo Mix Bus: Controls whether the mix buses are stereo (post pan) or mono (pre pan)