【Product Description】 This is the One Control Minimal Series AB Box (AB selector pedal). It can switch a single input signal to either A or B outputs, allowing you to switch between two amplifiers or use it as a mute switch for a tuner output. It uses a passive circuit, so it operates without power, and only requires a DC9V adapter for the LED to light up. By reversing the input and output, it can also be used to switch between two instruments with a single amplifier. 【Condition】 The product is in relatively good condition with no scratches, and the operation is also problem-free. However, as it is a used item, please refrain from purchasing if you are concerned about minor scratches, etc.