The EarthQuaker Devices A/B Box is a compact and straightforward tool that allows you to toggle between two options for nearly anything. Its entirely passive design means there's no circuitry between the inputs and outputs, enabling bidirectional use. It's versatile enough to switch between two amplifiers, alternate between channels on a multi-channel amplifier, function as a tuner out/mute switch, manage a dry and a wet signal path, or even transition between two instruments. The opportunity to passively make a selection is here!