Donner ABY BOX Line Selector Pedal Guitar Effects Pedal Mini

Convenient and compact size (42 x 93.5 x 52 mm) True bypass provides a clear sound, and it features an LED indicator to show the operating status. Switches the signal circuit between A/B and Y or Y and A/B. Uses a DC 9V voltage converted by an AC adapter; the barrel of the plug is positive, and the center is negative. Can be used without a power supply; power is supplied only to the indicator LED. A 9V adapter is required (sold separately).