The Voodoo Lab Control Switcher turns MIDI program changes into relay-based amp function switching. Four isolated relays automate non-MIDI footswitch functions such as channels, reverb, boost, EQ, or effects loop on amplifiers that still expect a simple short-to-ground footswitch. Front-panel LED buttons provide instant access while you program presets for setlist changes. Separate 1/4" mono jacks access each relay individually. A 5-pin MULTI DIN connector supports modern multi-pin amp footswitch jacks so one Control Switcher can replace a tangle of dedicated amp pedals. Compatible with Ground Control Pro or any MIDI controller. Powering It can be phantom-powered via MIDI from a GCX or Pedal Switcher, powered from any Pedal Power 9V DC output, or run from the included AC adapter. That flexibility lets it live behind an amp, in a rack, or on the pedalboard. Specifications Outputs: 4 relay contacts on 1/4" mono jacks + 5-pin MULTI DIN Control: 4 LED buttons, MIDI In/Out Power: 9-12V DC or 9VAC, 100 mA (AC adapter included); also Pedal Power 9V or MIDI phantom Dimensions: 6.2 x 3.1 x 1.2" (157 x 79 x 30 mm) Weight: 9.6 oz (0.27 kg) In the Box Control Switcher AC adapter