Lehle 3@1 SGoS Switcher specifications

You can also feed signals from totally different sound sources, such as keyboards and CD/MP3 players, to an amp or a PA channel. All inputs and outputs, plus the internal signal path, are stereo. Press the active footswitch again to route the signal to the second output, and thus to an instrument tuner, another amp, or a mixing console channel.
The Lehle 3at1 SGoS can be remote controlled using MIDI program change commands. You can also network the unit with other Lehle SGoS switchers via a stereo jack socket.