Specification:
PLS-4 Four-channel Line Switcher
PLS-4 is a four-channel Line Switcher. You can use an extensional footswitch pedal to select one of the four channels. For example, plug the guitar to the INPUT, send the sound to 4 different amplifiers, and select one of the amplifiers. Or, input 4 audio devices to PLS-4 and select one of them to output.

 *1 input to 4 outputs, or 4 inputs to 1 output
 *Remote footswitch pedal(optional)
 *True-bypass
 *Extra Low Noise
 *Mute Function