Casio PX560BE 88-Key Digital Stage Piano The PX-560 features Casio's renowned Tri-Sensor Scaled Hammer Action II keyboard, which accurately reproduces the touch and response of a concert grand piano. Casios Multi-Dimensional Air (Acoustic and Intelligent Resonator) Sound Source delivers some of the best piano sounds youve ever heard. Going beyond the traditional definition of a stage piano, the PX-560 includes 550 Tones, covering a huge variety of musical instruments and genres. Size with stand : 52.0 x 11.5 x 5.8 (inches) / 52.0 x 11.5 x 30.4 (inches) [optional]