With the A/B/Y, connect to two amplifiers and switch between A and B, or use both simultaneously by engaging the Y switch. Wired to provide quiet switching between outputs, no loud pops or clicks. Every pedal is hand built and bench tested prior to shipping. We use high quality Neutrik jacks and pro series footswitches rated at 2x more cycles than regular switches.Dimensions: 4.7" x 2.6"Power: 9V DC (-) tip polarity

Smokin' Amp.Co. ABY switch