The Digitech Control One is a MIDI foot controller compatible with multi-effectors and rack systems. It allows for intuitive switching of multiple presets and effect control at your feet, making it ideal for live performances and studio work. I received this from a friend, but I'm selling it because I need more space and want to introduce other equipment. I confirmed its operation when I received it, and there were no problems. The foot controller can be powered with a single MIDI cable. There are some minor scratches and dirt on the surface from use, but there are no critical scratches or rust. There is no manual, but I think it can be operated intuitively. This is only the main unit. Thank you.