The SP-2 sustain pedal from M-Audio is ideal for keyboard players seeking an authentic pedal playing experience. The SP-2 model features a classic design and is used like the sustain pedal of an acoustic piano, making it compatible with any M-Audio keyboard. It is crafted to feel and function like the sustain pedal of an acoustic piano. Additionally, it comes with a non-slip rubber plate specifically designed for playing on extremely slippery surfaces. Therefore, the SP-2 model is a high-quality, switchable sustain pedal.