Yamaha YDP-145 vs Yamaha YDP-S55 – Best Yamaha Piano?

In this Yamaha YDP-145 vs Yamaha YDP-S55 comparison, let's see how these two Arius pianos compare to one another!

If you’re intrigued by the Yamaha Arius line of digital pianos, then you’re likely seeking a great comparison between the Yamaha YDP-145 vs Yamaha YDP-S55. So in this article, I’ll break down the similarities and differences between these two models, helping you determine which is the best fit for your specific needs.

Yamaha YDP-145
Yamaha YDP-S55
Yamaha YDP-165
Yamaha YDP-105
Yamaha YDP 184

Yamaha YDP-145 vs Yamaha YDP-S55

Between the Yamaha YDP-145 and Yamaha YDP-S55, the Yamaha YDP-S55 stands out as being the best piano due to its enhanced features, portability, and sound quality. 

Although it comes with a higher price tag, the Yamaha YDP-S55 offers more value for your money, making it suitable for a broader range of players (from beginners to intermediate players—and perhaps some more advanced pianists too. 

1) Casio PX-770
2) Yamaha YDP-145
3) Roland RP-701
4) Yamaha YDP-165
5) Casio PX-870


The Yamaha YDP-145 is generally more affordable than the Yamaha YDP-S55. While prices may vary depending on the retailer, the YDP-145 is typically priced around $1,100. The YDP-145’s lower price point makes it an attractive option for those on a budget or beginners who are just starting their piano journey.

On the other hand, the YDP-S55 comes in at around $1,500. This higher price is due to its slim design, portability, and additional features. If you’re willing to invest in a higher-priced digital piano that offers more versatility, the YDP-S55 might be a better option for you.


While both the Yamaha YDP-145 and YDP-S55 are digital pianos housed in furniture-style cabinets, the YDP-S55 is lighter due to its slim and lightweight design.

 The YDP-S55 weighs approximately 88 lbs (40 kg) and features a minimalistic, space-saving design, making it easier to move and fit into smaller spaces. 

On the other hand, the YDP-145 is more traditional in its design and weighs around 108 lbs (49 kg), making it less suitable for those that need or want to move your piano around the room often.

Yamaha YDP-145
Yamaha YDP-S55
Yamaha YDP-165
Yamaha YDP-105
Yamaha YDP 184

Key Action

When comparing the key action of the Yamaha YDP-145 to the Yamaha YDP-S55, it is crucial to look at the technology behind each piano’s keyboard, as this directly affects the overall playing experience.

The Yamaha YDP-145 features the GHS (Graded Hammer Standard) action, which provides a heavier touch in the lower register and a lighter touch in the higher register, mimicking the feel of an acoustic piano. 

This is a suitable option for beginners, as it helps them develop proper finger strength and technique. However, some players might find the GHS action to be less responsive and not as expressive as more advanced key actions.

On the other hand, the Yamaha YDP-S55 is equipped with the GH3 (Graded Hammer 3) action, which offers a more realistic and responsive touch. The GH3 action incorporates a triple-sensor system, providing better repetition and control, particularly when playing fast passages. 

The synthetic ebony and ivory key surfaces on the YDP-S55 also give the player a more authentic feel and better grip, enhancing the overall playing experience.

In summary, while the Yamaha YDP-145’s GHS action is adequate for beginners, the Yamaha YDP-S55’s GH3 action offers a more realistic and enjoyable playing experience.


The sound quality of a digital piano is another vital aspect to consider, as it can significantly impact the overall playing experience. In this regard, both the Yamaha YDP-145 and the Yamaha YDP-S55 offer impressive sound quality—but there are some differences worth noting.

The Yamaha YDP-145 uses Yamaha’s Advanced Wave Memory (AWM) Dynamic Stereo Sampling technology to create its piano sound. The AWM samples acoustic piano tones at different velocity levels, providing a more dynamic and expressive sound. 

However, the YDP-145 has a somewhat limited polyphony of 192 notes, which may affect the richness and complexity of the sound when playing more intricate and layered compositions.

In contrast, the Yamaha YDP-S55 employs Yamaha’s renowned CFX sound engine, which is based on samples from the acclaimed Yamaha CFX concert grand piano. This sound engine delivers a more detailed and nuanced sound, resulting in a richer and more immersive playing experience. 

Additionally, the YDP-S55 boasts a polyphony of 256 notes, allowing for greater expressiveness and complexity when playing demanding pieces.

Virtual Resonance Modeling (VRM) is another feature found in the YDP-S55, which simulates the resonance and interaction of strings and soundboard in an acoustic piano. This feature further enhances the realism and depth of the sound.

Overall, both the Yamaha YDP-145 and Yamaha YDP-S55 provide good sound quality, but the YDP-S55 stands out as the superior choice in this regard. 

Notable Features

Both the Yamaha YDP-145 and YDP-S55 come with a range of features that cater to different players’ needs.The Yamaha YDP-145 includes:

  1. A built-in 2-track song recorder for capturing your performances and practice sessions.
  2. 10 preset voices, including electric pianos and organs.
  3. A built-in metronome and dual headphone jacks for silent practice.
  4. USB to Host connectivity for easy integration with computers and mobile devices.

The Yamaha YDP-S55 includes:

  1. A more extensive selection of voices, with 24 instrument sounds available.
  2. A built-in song recorder with 10 user songs.
  3. A “Smart Pianist” app compatibility for additional learning and practice tools.
  4. Bluetooth audio and MIDI connectivity for wireless integration with computers and mobile devices.
  5. A key cover that doubles as a music rest.
Yamaha YDP-145
Yamaha YDP-S55
Yamaha YDP-165
Yamaha YDP-105
Yamaha YDP 184

Ideal Demographic for Each Piano

The Yamaha YDP-145 is an excellent choice for beginners and intermediate players looking for an affordable digital piano with solid key action and sound quality. Its lower price point and essential features make it a suitable option for those starting their piano journey or working with a limited budget.

In contrast, the Yamaha YDP-S55 is a more versatile instrument with additional features and an enhanced sound engine. Its slim design make it ideal for piano players with living in small spaces or those who need to move their instrument regularly. 

The YDP-S55 is suitable for beginners and intermediate players who require more functionality and a better overall sound.

Buy the Yamaha YDP-145 or Yamaha YDP-S55?

After a comprehensive comparison of the Yamaha YDP-145 and Yamaha YDP-S55, I think the Yamaha YDP-S55 for its superior sound quality and more advanced features. While the Yamaha YDP-145 is a high quality digital piano, the YDP-S55 offers a more authentic and satisfying playing experience, making it a better value for money.

The Yamaha YDP-S55 excels in providing a high-quality piano experience, thanks to its GH3 keyboard action, CFX sound engine, and Virtual Resonance Modeling (VRM). These features ensure that the YDP-S55 accurately replicates the touch and tone of an acoustic piano, providing a fulfilling and realistic playing experience. 

This focus on authenticity is a significant advantage for players who want to develop proper piano playing techniques and for experienced players seeking a genuine piano feel in a digital instrument.

If this article helped you, please “like” our Digital Piano Review Guide Facebook page!

You Might Also Enjoy:

Similar Posts

Leave a Reply