Sing along while you play!
Simply connect a microphone to the DGX-660 to either sing along with your playing or with pre-recorded karaoke song files from Yamaha Musicsoft. Hear what you sound like with everything mixed perfectly together from the built-in speakers. View the lyrics on the included score display. Three convenient presets are provided for different vocal performance situations. You can even create and save your own original microphone settings including professional reverb and chorus effects.

Go wireless with your iOS device
Optional wireless adaptors from Yamaha stream audio and MIDI to and from your iOS device with compatible music apps. The Chord Tracker app takes full advantage of this technology, allowing you to play back songs from your iOS device song library wirelessly through the DGX-660's speaker system. Chord Tracker analyzes the audio songs stored in your iOS device and then displays the chord symbols for you. It can even create an XF song file that plays back the entire song using the DGX-660's accompaniment Styles.

Authentic piano touch, 88-note weighted GHS keyboard
The Yamaha Graded Hammer Standard (GHS) keyboard features a weighted action with heavier touch in the low end and lighter touch in the high end, just like the hammers inside an acoustic piano. Great for the aspiring pianist, practicing on the GHS action builds the proper finger technique and strength for when the time comes to perform on an acoustic piano.

Damper Resonance
Damper Resonance digitally reproduces the sympathetic vibration between strings on acoustic pianos. Just like an acoustic piano, when the damper pedal is used in a performance, other strings add sonic color to the notes you play until the pedal is released.

Easy-to-read score and lyric display
The crystal-clear LCD can be switched to score or lyric display, showing you notation for any MIDI song that the DGX-660 is playing. Read the music for your favorite built-in songs, or follow along with songs downloaded to a USB device from Yamaha MusicSoft. Even see the score for songs you've created yourself on the DGX-660!

Live! Cool!, and Sweet! Voices
Authentic guitars, lush strings, punchy brass… the highly acclaimed Live!, Cool! and Sweet! Voices feature a unique blend of long, stereo and multi-layered samples that capture the essence of each instrument, right down to genuine resonance, expression and vibrato.

USB Audio Recording/Playback
Record performances or MIDI songs as uncompressed, CD-quality audio (WAV) to a USB flash drive using the Audio Recorder. From there, you can copy songs to your computer to make CDs, share over the Internet or transfer to your portable music player. You can also playback uncompressed WAV files stored on a USB flash drive.

Chords played simply. Sound like a pro!
Smart Chord makes you sound like a pro, even if you're just learning how to play. With a single finger on your left hand, Smart Chord will create entire chords from simple Pop triads to complex jazz 7th and 9th chords. Accompaniment Styles create the rest of your virtual band so you can get straight to playing music.

Specifications:

Size/Weight
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.)
Control Interface
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

Voices
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

Effects
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)
Accompaniment Styles
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)

Songs
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)
Functions
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 and Connectivity
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 and Speakers
Amplifiers    6W x 2
Speakers    12cm x 2 + 5cm x 2
Power Supply
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. *2: The PRODUCT ID on the sheet will be needed when you fill out the User Registration form.