A piano-and-accompaniment instrument rather than a deliberately minimalist practice keyboard.
Who I would put this on the shortlist for
A player who will actually use backing styles, a microphone and onboard recording. Those functions can justify choosing it over a more stripped-down portable piano.
What to check before buying
Check the size and carrying weight. Its headphone connection also handles the output role; do not assume it has the dedicated left/right line outputs found on some performance-oriented models.
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Listed by the manufacturer for the US market when checked; dealer stock, finishes, bundles and regional features must be confirmed before purchase.
From the service side
My technician’s perspective
Ownership advice — not an exact-model repair report
Before buying, try every key at soft and firm touch, test the pedals and headphone sockets, and confirm the exact model and included accessories. This is an ownership checklist, not a claim that this model has a particular defect. For service questions, contact me with the model number and a description of the symptom.
Yamaha DGX-670 specifications
Manufacturer specifications unless a source states otherwise. Unknown details stay unverified. Model and finish variants may differ.
- Number of keys
- 88
- Keyboard action
- GHS (Graded Hammer Standard)
- Piano sound engine
- Yamaha CFX; VRM
- Maximum polyphony
- 256
- Voices / tones
- 601 voices + 29 drum/SFX kits
- Amplifier output
- 6 W × 2
- Weight (manufacturer configuration)
- 21.4 kg
- Dimensions: W × D × H
- 1397 × 445 × 151 mm
- USB MIDI
- Yes
- USB audio interface to a computer
- Yes — 44.1 kHz / 16-bit
- Bluetooth audio input
- Yes — audio
- Bluetooth MIDI
- No — optional adapter required
- 5-pin DIN MIDI
- No
- Dedicated line outputs
- No dedicated L/R outputs listed; headphone output
- Headphone sockets
- 1 × 6.35 mm stereo
- Pedals and half-pedaling
- Optional LP-1 three-pedal unit / FC3A damper
- Onboard recording
- 16-track MIDI; USB-drive WAV recording
- Battery operation
- No — AC power
- Included / optional setup
- Footswitch; L-300 stand optional
- Other useful features
- 263 accompaniment styles; microphone input; color display
Related advice and repair articles
Sources and scope
Technical data checked 2026-09-22. This is an editorial buying guide, not a laboratory test or a measured reliability study. No exact-model repair is implied unless identified above.
- Yamaha specifications and product information (manufacturer)
