This a Morley Pro Series volume Pedal for guitar. It works well, and there are no known issues. This is a very simple pedal and a good thing for any guitarist to have. It allows you to either mute your volume completely or do those sweet sounding volume swells that you can hear from many popular guitarists. This pedal is in very good used shape, with some scratches and nicks. Rubber feet have been replaced. Power supply not included.