The Voodoo Lab Amp Selector PRO expands active amp switching to four transformer-isolated outputs with programmable presets and MIDI. Studio-quality buffering, custom nickel-core isolation transformers, and Quiet Switching keep multi-amp and modeler rigs quiet and clear without loading pickups or introducing ground hum. Direct Access mode gives instant on/off control of each output. Preset mode programs footswitches to turn multiple outputs on or off together for song-based amp combinations. MIDI In and Out send and receive messages to change outputs and control outboard gear in a larger switching system. Controls and Routing Each of the four isolated outputs has dedicated level and ground-lift controls so levels and ground references can be set per amp. Global phase invert corrects hollow, out-of-phase blends. A 1/4" Thru supports tuner, DI, console routing, or re-amping while the isolated outs feed the amps. Specifications Type: Active multi-amp switcher with MIDI Inputs: 1 x 1/4" Outputs: 4 x isolated 1/4" amp outs, 1 x 1/4" Thru MIDI: In and Out Modes: Direct Access, Preset, MIDI control Features: Per-output level and ground lift, global phase invert, Quiet Switching Power: 9V DC, 5.5 x 2.1 mm center-negative (not included) Dimensions: 11 x 3.75 x 1.38" (280 x 96 x 35 mm) Weight: 1.3 lb (0.59 kg) In the Box Amp Selector PRO