The new top of the range 88 keys Yamaha DGX-630 features a fully weighted 88-note Graded Hammer keyboard action, a new piano sound with 64-note polyphony and over 500 high quality sounds. Yamaha Education System (YES) offers an easy, intuitive method of learning how to play a keyboard music instrument. Stand, AC Adapter, Foot Pedal, and Quick-Start DVD are included. USB connectivity for easy matchup to optional PC software complements. Yamaha DGX Series offers a high quality, moderately priced digital piano, but also a diverse feature set typically found on high-end professional synthesizer products. 88 Graded Hammer Standard (GHS) keys Dual and split modes FC5 sustain pad, music rest and CD-ROM included GM and XG-Lite compatible Headphone port Large backlit (blue) LCD display Multi-fingering mode and 'full' keyboard mode available Optional 3-way pedal board available (model LP-7) Over 500 voices to select from Pitchbend wheel Registration memories (2 x 8 banks) Reverb, Chorus, DSP and master EQ effects Supplied with fixed-frame wooden stand and AC power adaptor Sweet, Live and Cool voice technology USB connectivity Yamaha Education Suite (Y.