Radial Engineering's BigShot ABY switching pedal effectively runs your two-amplifier setup, while taking into account all the noise and polarity issues you may encounter. The pedal's two switches allow you to select between two amps or run them both simultaneously. The BigShot ABY's onboard ground lift and selectable onboard isolation transformer ensure silent operation, while any polarity disparity between your two amplifiers is easily corrected via the unit's polarity switch. And the BigShot ABY is very popular at GearNuts for its passive, true-bypass design. Radial Engineering BigShot ABY Amplifier Switching Pedal Features: A/B/Y pedal that switches between guitar or bass amplifiers Can switch between amplifiers or run both simultaneously Ground lift and onboard isolation transformer defeat ground loops Polarity switch ensures amps work in unison Passive, true-bypass circuit retains your core tone Built rugged for years of use Control your 2-amp setup with the BigShot ABY