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Yamaha Digital Piano DGX-640W
88-key Graded Hammer Standard keyboard
535 voices
64-note polyphony
4 Pianos (Live! Grand Piano, Live! Pop Grand, Live! Warm Grand, and Ambient Grand Piano)
9 Live! voices, 7 Cool! voices, 8 Sweet! voices
35 reverb types
44 chorus types
237 DSP types
5 preset master EQ types
Dual and split modes
26 harmony/echo types
165 preset styles
30 preset songs
Records up to 5 songs
6-track recording (5 melody tracks and 1 chord track)
User-song format to standard-MIDI format conversion
Lyric and score display modes
Easy Song Arranger functionality
300+ songs included
Built-in metronome
Yamaha Education functionality
Performance Assistant Technology
Pitch-bend wheel
Compatible with a single sustain pedal or the LP-7A 3-pedal unit
Backlit 98mm x 65mm (320 x 240 dot) display
XG lite general MIDI
1/4" headphone output
USB ports to and from device (accepts USB flash memory)
Recognizes XG/XF songs formats
Performance Guide
Music Finder Record
2 x 6-watt speakers