Running multiple amps with passive switchers or long cables robs your signal of highs and presence. Amp Selector PRO's studio-grade buffer is built around the Texas Instruments LME49720, an ultra-low-distortion op-amp with vanishingly low noise and exceptional signal clarity so your tone stays pure from input to output. Most amp switchers use noisy mechanical relays that click and pop when you change channels. Voodoo Lab's Quiet Switching technology delivers silent operation and smooth, professional transitions — whether you're toggling between two amps or four. Phase issues can make multi-amp rigs sound thin and hollow. Flip Amp Selector PRO's programmable phase invert switch on any output to restore your tone to full harmonic depth. Independent level controls let you balance volume between mismatched amps or modelers instantly. Dial in your tones and signal routing once, save it as a preset, and recall it instantly from Amp Selector PRO or via MIDI.