The flagship of the new Privia line, the PX-850 has the advanced AiR sound set providing an additional level of realism, including grand piano lid simulation and sympathetic resonance. A combination of a new keyboard action and a powerful new sound engine provide a new level of detail, nuance and expression for a superior grand piano experience in the stylish design that Privia is known for. The award winning grand piano sound in Privia has been dramatically improved. The new PX-850 utilizes more than three times the memory of the previous generation for a more natural piano tone. In addition, Casio’s new proprietary sound source AiR (Acoustic and intelligent Resonator) provides unmatched realism and detail. This engine provides seamless dynamics for a remarkably expressive and powerful performance. For further realism a new Damper & String Resonance and Hammer Response simulator provides the rich sound of the strings when the sustain pedal is used. The new PX-850 also features a new redesigned 88 note Tri-sensor scaled hammer action keyboard. This new action features new simulated Ebony and Ivory textured keys for an incredible feel and it’s three sensors capture the dynamics of a performance with unparalleled speed and accuracy. To further enhance the experience, the action and the sound engine take into consideration the speed at which different sized hammers move inside acoustic grand relative to velocity the keys are pressed, this timing nuance provides the ultimate key to sound experience. The PX-850 offers an impressive 256 notes of polyphony, as well as a choice of instrument tones including strings, organs, electric pianos and bass. The PX-850 provides split and layer capability allowing you to play bass in your left hand and have two layered tones in your right. Duet mode splits the keyboard into two equal ranges, allowing student and teacher to use the piano simultaneously.