Sustain Pedal SP-34C2 for Digital Casio Pianos, 3 pedal board with Sustain, Soft and Sostenuto. Designed for Privia and CDP-S digital pianos.Add the full functionality of three pedals – Sustain, Soft and Sostenuto – to your Privia and CDP-S digital piano. The extended damper function simulates the response of a half-pressed pedal. Compatible with the following: PX-S1000, PX-S3000, CDP-S350.