DGX-660
Dimensions Width 1,397mm (55”) /with keyboard stand 1,399mm (55-1/16”)
Height 146mm (5-3/4”) /with keyboard stand  761mm (29-15/16”)
Depth 445mm (17-1/2”) /with keyboard stand  445mm (17-1/2”)
Weight Weight 21kg (46 lbs. 5 oz.)/with keyboard stand:28kg (61 lbs. 12 oz.)
Keyboard Number of Keys 88
Type Graded Hammer Standard(GHS) keyboard
Touch Response Soft, Medium, Hard, Fixed
Other Controllers Pitch Bend Yes
Display Type Full Dot LCD
Size 320×240 dots
Color Monochrome
Contrast Yes
Score Display Function Yes
Lyrics Display Function Yes
Language English
Panel Language English
Tone Generation Piano Sound Pure CF Sound Engine
Damper Resonance Yes
Polyphony Number of Polyphony (Max.) 192
Preset Number of Voices 151 + 15 Drum/SFX Kits + 388 XGlite
Featured Voices 1 Natural! Voice, 10 Live! Voices, 11 Sweet! Voices, 7 Cool! Voices
Compatibility GM Yes
XGlite Yes
Types Reverb 41 types
Chorus 44 types
DSP 237 types
Master EQ 5 types
Intelligent Acoustic Control (IAC) Yes
Functions Dual Yes
Split Yes
Panel Sustain Yes (Function Menu)
Preset Number of Preset Styles 205
Fingering Multi Finger, Full Keybord, AI Fingered
Style Control INTRO, MAIN x 2, FILL-IN x 2, ENDING
Other Features Music Database 320
One Touch Setting (OTS) Yes
Style Recommender Yes
Smart Chord Yes
Compatibility Style File Format (SFF),Style File Format GE (SFF GE)
Preset Number of Preset Songs 100
Recording Number of Songs 5
Number of Tracks 6
Data Capacity Approx. 30,000 notes for 1 user song
Compatible Data Format Playback SMF (Format 0, Format 1), XF
Recording SMF (Format 0)
Registration Number of Buttons 4 ( x 8 banks )
Lesson/Guide Yamaha Education Suite (Y.E.S.) Waiting, Your tempo, Minus one, Repeat & Learn, Chord Dictionary
Demo/Help Demonstration Yes
Overall Controls Metronome Yes
Tempo Range 5 - 280
Transpose -12 – 0 – +12
Tuning 415.3 - 440.0 - 466.2 Hz
Miscellaneous Piano Room Yes
Audio Recorder/Player Recording Time (max.) 80 minutes/Song
Recording WAV (44.1kHz, 16bit, stereo)
Playback WAV (44.1kHz, 16bit, stereo)
Storage Internal Memory Approx. 1.7 MB
External Drives USB Flash Memory
Connectivity DC IN 12V
Headphones x 1 (Standard stereo phone jack)
Sustain Pedal Yes
Pedal Unit Yes
Microphone Yes (Standard phone jack)
AUX IN Yes (Stereo mini jack)
USB TO DEVICE Yes
USB TO HOST Yes
Amplifiers 6W x 2
Speakers 12cm x 2 + 5cm x 2
Power Supply Adaptor (PA-150 or an equivalent recommended by Yamaha)
Power Consumption 13 W
Auto Power Off Yes
Accessories • Owner's Manual • Data List • Keyboard Stand • Footswitch • Music Rest • AC Power Adaptor (PA-150 or an equivalent recommended by Yamaha) *1 • Warranty *1 • Online Member Product Registration *2 *1: May not be included depending on your area. Check with your Yamaha dealer.