The M-Audio SP-2 Sustain Pedal is the perfect product for keyboard players who want the most realistic action. The SP-2 model is used in the same way as the sustain pedal on an acoustic piano. This classic-style pedal works with any M-Audio keyboard. Designed to work and feel like an acoustic piano's sustain pedal, it has a specially designed rubber bottom that grips the floor and stays in place while you play. The SP-2 is a high quality switchable damper pedal.