The Lehle 1at3 SGoS guitar pedal is a genuine True-Bypass Switcher that routes the incoming signal from a single source to up to 3 outputs (e.g. amps, tuner, effects). Output B and the C->B jack can be used as a loop, enabling you to switch instantly between the unaffected signal and the signal with effects. The Lehle 1at3 SGoS can be controlled and synchronized with other Lehle SGoS Switchers via MIDI.