Outlaw THE-WYE Aby Switcher BoxVersatile, 2 way signal routing tool Instantly switch between two inputs or two outputs, or to use two inputs or two outputs simultaneously. Specifications For example: alternate between two different amps or amp channels; or quickly switch between two guitars going into one amp. In A or B Mode, the footswitch is used to select either Input Output A or Input Output B. In Y (A+B) Mode, both Input Output A and Input Output B are in use simultaneously,