Casio’s proprietary sound source, “AiR” (Acoustic and intelligent Resonator) provides the grand piano sounds in the PX-160. Casio meticulously recorded the sound of a 9-foot concert grand at 4 dynamic levels. The AiR engine delivers this sound with seamless dynamics for a remarkably expressive and powerful performance. Damper Resonance is simulated by AiR for uncanny realism when the damper pedal is used. The PX-160 utilizes Casio’s famous Tri-Sensor Scaled Hammer Action II keyboard. This action features new simulated Ebony and Ivory textured keys for an incredible feel and its three sensors capture the dynamics of a performance with unparalleled speed and accuracy. Casio’s proprietary Hammer Response feature takes into consideration the speed at which different sized hammers move inside an acoustic grand piano relative to the velocity the keys are played. This timing nuance provides the ultimate key-to-sound experience that is unmatched by the standard actions of other brands. For quiet listening, the PX-160 now has two headphone outputs which are located on the front of the instrument and for those who are performing with other amplification, the PX-160 also features 1/4" left and right line outputs on the rear panel. The PX-160 continues Casio’s tradition of providing “class compliant” USB connectivity on Privia digital pianos. This allows the PX-160 to be used with Mac or Windows computers without the need for downloading drivers. Class Compliant USB MIDI also allows the PX-160 to be used as a controller with the Apple iPad simply with the use of Apple’s Camera Connection Kit.