Yamaha DGX 640 Digital Piano Review 

 March 3, 2021

By  Zen Chung

Welcome to our Yamaha DGX 640 Review. If you’ve been looking around at various Yamaha DGX 640 reviews, and haven’t been satisfied with what you’ve found yet, you’re at the right place!

The Yamaha DGX-640 digital piano is one of the latest product offerings from Yamaha’s line of portable grand pianos.


Here are its features at a glance:

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  • Size (Width x Depth x Height): 55-1/16? x 17-1/2? x 5-3/4?
  • Weight: 45 lbs
  • 88-key Graded Hammer Standard (GHS) weighted action
  • 535 different tones or voices
  • 64-note polyphony
  • Backlit LCD displays lyrics, chords & notation
  • Decorative wooden stand, PA150 adapter & sustain pedal included
    237 DSP (digital signal processor) effects for more realism of all voices
  • Built-in speakers
  • Headphones can be connected, allowing you to practice silently
  • Front panel USB TO DEVICE: connect optional USB storage devices

Yamaha is a leading brand name when it comes to digital pianos, and the Yamaha 640 DGX is no exception when it comes to quality.

The graded hammer standard (GHS) weighted action keys provides the realistic feel and touch of the acoustic piano: the lower keys feel heavier and the higher keys feel lighter. Best of all, you can even adjust the Yamaha DGX 640 keyboard piano’s sensitivity to accommodate your own playing style.

At 45 lbs, the Yamaha keyboard DGX 640 is not an extremely lightweight digital piano that you can just lug around without a little effort. However, Yamaha has classed it as a portable grand piano, and it is definitely much more portable than an acoustic piano.

What sets the Yamaha DGX 640 digital piano apart from its competition?

The following features are what make the DGX 640 Yamaha an incredibly versatile instrument. These easily set it apart from most of the digital pianos on the market today.

  • a whopping 535 voices
  • pitch bend wheel
  • 237 different digital signal processor (DSP) effects, such as reverb-like ambience effects and distortion
The Yamaha keyboard DGX 640 is one of the few digital pianos on the market today with such a huge range of different instrumental sounds. The voices were generated using a blend of stereo and multi-layered samples, and as a result, produce extremely natural and highly dynamic sound that closely match the resonance and vibrato of the real instrument.

In addition, the different digital signal processor (DSP) effects, along with the pitch bend wheel, can be applied to the voices to enhance them or even completely transform them. This makes the Yamaha portable grand DGX-640 a supremely fun instrument to experiment with!

This is especially great if you’re trying to learn the piano: if you ever get frustrated or tired of listening to the same practice tunes in the same sound over and over again, just switch the voices or enhance them with a DSP effect, and the transformed tones will make you re-energized in your practice sessions. You’d never get bored with such a huge array of instrumental sounds!

Here’s a review from a very satisfied customer on Amazon, emphasizing why such a feature is so important:

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“…This is a fantastic keyboard. The voices alone are amazing. And if someone tells you that voices are not important, then consider this: When you get tired of practicing Hanon exercises or running scales, change the voice of the keyboard to a Harp, Violin, Guitar or Sitar. It will throw new life and fun times back into your practice…

Yamaha DGX 640 Review: A Great Tool To Self-Learn The Piano!

Like many Yamaha keyboards, the Yamaha piano DGX 640 is a great tool to self-learn the piano. The reasons are manifold:

The Yamaha Education Suite (Y.E.S.) allows you to learn and play along with popular tunes in incremental steps: separately and slowly with your left and right hands first before combining them at increasing speeds.
The built-in metronome enables you to maintain your playing tempo.
The DGX 640 Yamaha digital piano comes with an internal music database of 30 preset familiar easy songs.
The score of each song that is played-back is shown on the LCD screen: wonderful way to learn to read music!
Some songs even have lyric and chord data, and these will be displayed on the LCD screen as well, allowing you to better appreciate each melody!

Here’s an example of a recommendation of the Yamaha digital piano DGX 640, by a piano teacher:

“…As a piano teacher, I would recommend this to parents who are buying practice keyboards for their children, for churches that want to store preset sounds (8 banks of 4 sets of storage) and combinations (you can use dual and split functions with a myriad of sounds) and I would recommend this for teachers in studios…

Yamaha DGX 640 Review: Easy Recording Of Songs

The Yamaha DGX640 digital piano allows easy recording of tunes you play with the built-in recorder. With the USB sockets, connecting to your computer is exceptionally
simple, and you can easily transfer songs to and from your computer or other USB devices such as hard drives or flash drives.

Share your beautiful playing or new masterful compositions with others easily by uploading to your computer!

Yamaha DGX 640 Review: Bottomline

As with all Yamaha keyboards, you can be assured of the quality, design and sturdiness of the Yamaha keyboards DGX 640. We leave you with this testimonial, which we whole-heartedly agree with.

“…I’ve owned many digital pianos in the last 25 years and am really amazed at all that Yamaha has provided in the DGX-640. It’s versatility, weighted keys, USB port and other special features, cost and portability make this keyboard very unique. I have spent 3 times this amount trying to get some of these features in years gone by…

Zen Chung

I'm Zen Chung, a piano and violin teacher based out of Plano, Texas. I started this blog because my students (and their parents) kept asking about the best musical instruments to buy online. Look no further I'm here to save the day! 

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