Voodoo Lab Control Switcher for adding MIDI control to an amplifier’s footswitch functions. Its four isolated relay controls can operate amp channels, boost, EQ, reverb, effects loops and other switchable functions, with four individual 1/4-inch control outputs and a 5-pin MULTI connection. It works with standard MIDI controllers and includes MIDI In and Out for connecting it within a larger rig. Power requirement is 9–12V DC or 9V AC at 100mA with center-negative polarity. It measures approximately 6.2 x 3.1 x 1.2 inches and weighs 9.6 ounces. The pictured unit has some light cosmetic wear from normal use. Power supply and connecting cables are not shown.