Palmer Triage Amp Selector with the Triage you can selectively route one guitar signal to three diffrent amps, a fourth switch (sidekick) makes it possible to select a second amp in addition to the one that is already activated, all outputs are transformer isolated, each output with buffer amp, the signal can be boosted up to 12 dB, each output with phase switch and ground lift switch, 9V power supply optional (#108096)