Featuring superior grand piano sound, the px780 is the next step up in the privia piano line. The px780 features 250 built-in tones with split and layer, dual 20 watt speakers, usb midi and 3 pedals. The px780 piano is packaged in a stylish cabinet with sliding key cover. Experience the elegant design and rich resonance of the px-780. The new px780 represents a significant step in the continuing evolution of the privia digital piano line. 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 a stylish design that privia is known for. The award winning grand piano sound in privia has been dramatically improved. The new px780 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 resonance and hammer response simulator provides the rich sound of the strings when the sustain pedal is used. He new px780 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.