New Hand made ABY Guitar pedal Switch Box A/B Combiner Footswitch TRUE BYPASS Amp / guitar AB Diecast Aluminium Casing Sturdy Switch for foot use. Route one signal to two outputs or two inputs to one output Choose A, B or A & B combined 3 LED's show you which signal is active True bypass, All our pedals are tested using a live setup with guitars, effects and tube amplifiers.