The Voodoo Lab Control Switcher Guitar Footswitch changes channels on multiple amps and easily automates any non-MIDI functions. Using a Voodoo Lab Commander or Voodoo Lab Ground Control Pro, the Control Switcher gives you instant MIDI programmability for controlling all foot-switchable amp functions including channel switching, reverb, boost, EQ, loop, and more. Voodoo Lab Control Switcher is armed with 4 completely isolated relays with front panel instant access buttons, separate 1/4" mono outputs and a multi-DIN connector. Voodoo Lab makes the Control Switcher run off a standard 9V power supply and compact enough to mount behind an amp, inside a rack, or on a pedalboard.4 isolated relay controls Front panel instant access buttons Separate 1/4" mono jacks Multi-DIN connector for modern amps Controls any footswitch function Phantom powered by GCX or Pedal Switcher via MIDI cable Works with Program and Control changes Competitively priced!! Hand built in the U.S.A. 5-year warranty