Mooer Micro MEP-ABY2 ABY MkII Channel SwitcherThe Mooer MEP ABY2 ABY MKII channel switching pedal can be used as an A B or Y switch. The signal can flow from A or B to Y, or the signal can flow from Y to A or B. The pedal can work without power supply but the LED will not light. Features: Signal path can flow from A B to Y, or from Y to A B Can work without power supply (LED will not be lit up) A: Red B: Blue Y: Pink The pedal switching is True Bypass, so the sonic integrity of your instrument is