Thank you for viewing. This is a listing for the Mooer / Trelicopter. Power-on has been confirmed, and it is in good working order. *This listing is for the main unit only (no accessories such as an adapter). [Product Overview] The Trelicopter is a classic optical tremolo pedal. It reproduces the unique tremolo effect found in vintage amplifiers while offering low noise and versatile sound creation. [Controls] ・SPEED: Adjusts the speed of the tremolo ・DEPTH: Adjusts the depth of the effect ・BIAS: Adjusts the tone character of the tremolo [Specifications] ・Effect Type: Tremolo (Optical) ・Adapter: DC9V center negative ・Battery Operation: Not supported. ・True Bypass As this is a used item, there are minor scratches and scuffs on the exterior, but there are no issues with its operation. Please check the condition in the photos. If you have any questions, please feel free to comment. I will pack it carefully and ship it promptly.