The JHS Mini A/B Box Switcher Pedal lets you switch between two inputs to one output (e.g. two guitars in to one amp), or one input to two outputs (e.g. one guitar in to two amps) and can be used for utilities like keeping your tuner pedal out of your signal chain or as a mute switch. The pedal is passive and can switch between channels with no power requirements (a 9 V power adapter is only required to take advantage of the LED indicator) and the small enclosure takes up little space on pedalboards.