Lehle 1AT3 Switcher For One Instrument To 3 AmpsThe Lehle 1at3 SGoS is a programmable True Bypass switcher that lets you switch backwards and forwards between up to three amplifiers, when you want, as often as you want. In combination with jack socket CB, output C can also be used alternatively as an effect loop for amp B, excluding all the effects you don't currently need from the signal path. A tuner can also be connected to output A, taking it, too, out of the signal chain. The gold plated