Universal piano style sustain pedal. The Alesis ASP-2 is the perfect product for keyboard players who want the most realistic pedal action. Designed to work and feel just like an acoustic piano's sustain pedal, it has a specially-designed rubber bottom that grips the floor and won't move while you play. This classic-style pedal works with any Alesis digital piano, keyboard or MIDI controller and it also has a polarity switch for compatibility with virtually all other branded keyboards. Features: Classic and durable design with authentic piano style feel; Hardwired 6' (1.82m) cable with 1/4'' (6.35mm) connector; Polarity switch for compatibility with all electronic keyboards