Lehle Dual SGoS Switcher - sends the signal via gold-plated relays to outputs A, B or T. Outputs A and B can feed two different amps simultaneously since the signal paths are electrically isolated through the Lehle LTHZ high end transformer, completely eliminating hum loops. In this case the pots allow you to lower the output signal for A and B separately. Output T can be used for a tuner or a thirrd amplifier. Both inputs can be routed stereo to the outputs A and B. In addition to that the Lehle Dual provides gold-plated phase-reverse and ground lift switches. The Lehle Dual can be controlled and synchronized with other Lehle SGoS switchers via MIDI. Optional power supply available.