Foot pedal. M-Audio's SP-2 is the perfect solution for keyboard users looking for a more realistic feel, as it is used like a piano pedal. It is compatible with most keyboards on the market as well as M Audio MIDI keyboards. As it is designed to give the feeling of a piano pedal, it has a special rubber bottom for greater stability during use. Features: Classic design Compatible with all MIDI Keyboards Cable 6 with 1/4 jack plug Sturdy construction Plastic casing and chrome pedals