Yamaha DGX-640 Review – Updated 2020 – Worth the Price?

*Yamaha DGX-640 has been discontinued by the manufacturer.
The new model of this digital piano is Yamaha DGX-660*

The Yamaha DGX 640 is the older version of the Yamaha DGX 530 and the overall senior instrument of the lot. This model comes with Yamahas flagship keyboard – the 88 key Graded Hammer Standard (GHS) keyboard making this model a pleasure to watch and a joy to play. The model is also equipped with some new digital features as well;

  • PureCF-sampled piano: Sampled from Yamaha’s acclaimed CFIIIS concert grand, no other digital piano brand at this price delivers recordings from such a high-end instrument.
  • AUX line input: Connect any device with a line output like mobile devices, computers, mixers or even another keyboard and hear it through the internal speakers.
  • 128-note polyphony: Provides enough horsepower for a dropout-free performance while layering two Voices and playing two-handed, sustained chords.
  • 88-note, weighted GHS action: Heavier touch in the low end and lighter in the highs, just like an acoustic piano.
  • “You Are the Artist” Series: Professionally arranged, play-along songs matched with songbooks from Hal Leonard. Learn to play songs by artists like Elton John, Taylor Swift, Adele and more.


Thanks to the traditional brand name of Yamaha and its significance in the field of music for many decades, the DGX 640 is an aesthetically pleasing and a very realistic acoustic digital piano.

Much of the traits of this model comes from the innovative sampling of its manufacturer along with the advanced sound engine.

In addition to this, lies the numerous voices, effects, modes and settings of the digital end in the DGX 640.

Taking every feature of this model into consideration, it is imperative that this undoubtedly becomes a showstopper.


The only downside of this versatile model is that it is not in production at the moment.

Yamaha had seized manufacturing of this model and the only way to lay some hands in it is through the second-hand market.

That again is not very reliable and the instruments which go up for sale usually are not maintained properly.

Sound Quality

SOUND QUALITY of dgx-640 portable usb grand digital piano keyboard

The Yamaha DGX 640 is embedded with a total of 535 voices to choose from which almost everyone has a very rich and realistic tone.

The model is also successful when considering the overall standard including the shape and make.

The sound sampling of the manufacturer has been a success with its innovative, yet realistic techniques and methods.

The DGX 640 also comes with 64 notes of polyphony making the premature dropping of notes impossible.

The price of this model is not expensive as some other models of Yamaha making it a great buy as an affordable piano.

Key Action and Realism

Key Action and Realism of the DGX640

The Yamaha portable grand DGX 640 comes equipped with the company’s GHS keyboard—Yamaha’s flagship keyboard and their most popular one to date.

Thanks to this keyboard, the key action of the DGX 640 Yamaha is simply amazing.

The keys have just the right amount of resistance and are graded, just like an acoustic piano making this a great instrument to a player who looks for that realistic vibe over everything else.

Other Features and Specifications

Other Features and Specifications of the dgx640 digital piano review

The model comes with a wide range of features, settings, and functions which includes 530 different quality voices, a digital signal processor that has the ability to add 237 types of digital effects to these voices along with the renowned Yamaha Education Suite.

In addition to this comes USB connectivity, a built-in headphone jack, a large music database, Performance Assistance Technology, an Easy Song Arranger that will let the player play any song in any style.

The DGX 640 weighs 83 pounds which means that it’s not easy to constantly transport this instrument from one place to another.

But this also doesn’t mean it carries excess weights to be constantly fixed in one place too.

Final Thoughts

The Yamaha DGX 640 is a keyboard of great quality with an A-grade key action and realistic acoustic sounds.

The different features loaded in this model makes this piece fitting to any kind of musician, be it a beginner or an expert.

Summing up, this digital keyboard is one of the best ever made from Yamaha making this instrument worthy to be played anywhere anytime, be it a normal gig or a high-end musical production.

Last update on 2021-07-25 / Affiliate links / Images from Amazon Product Advertising API

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