If you’re in the market for a high-quality digital piano and have narrowed your choices down to the Yamaha YDP-165 and Yamaha YDP-S55, you’re in the right place. These two models sit at a similar price point and offer many of the same features, but they have some crucial differences that might make one a better fit for your needs than the other.
In this in-depth review, I’ll break down the key aspects of each piano, including design, keyboard feel, sound quality, speaker system, functions, connectivity, value for money, and other important considerations. By the end of this review, you should have a clear understanding of which model best suits your playing style and preferences.
Yamaha YDP-165 vs Yamaha YDP-S55 Comparison Chart
If you click the links below, under the product images you will be redirected to Amazon.com. In case you then decide to buy anything, Amazon.com will pay me a commission. This doesn’t affect the honesty of this review in any way though.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
 |  | |
| Price | Check the best price on Amazon | Check the best price on Amazon |
| Design | Traditional upright console-style | Slim, modern, space-saving design |
| Dimensions (W x D x H) | 135.7 cm × 42.2 cm × 84.9 cm | 135.3 cm × 29.6 cm × 79.2 cm |
| Weight | 42 kg (92.6 lbs) | 40 kg (88.2 lbs) |
| Finishes Available | Black, Dark Rosewood, White, White Ash | Black, White |
| Keyboard Action | Graded Hammer 3 (GH3) | Graded Hammer 3 (GH3) |
| Key Material | Synthetic ivory & ebony | Synthetic ivory & ebony |
| Number of Keys | 88 | 88 |
| Touch Sensitivity Levels | Soft, Medium (default), Hard, Fixed | Soft, Medium (default), Hard, Fixed |
| Sound Engine | Yamaha CFX Concert Grand Sampling | Yamaha CFX Concert Grand Sampling |
| Virtual Resonance Modeling | VRM Lite | VRM Lite |
| Polyphony | 192 notes | 192 notes |
| Number of Voices | 10 | 10 |
| Speaker System | Two-way speakers (12 cm + 4 cm per side) | Full-range speakers (12 cm per side) |
| Total Speaker Power | 40W (2 x 20W) | 40W (2 x 20W) |
| Smart Pianist App Support | Yes (via USB) | Yes (via USB) |
| Dual Mode (Layering Sounds) | Yes | Yes |
| Duo Mode (Split Keyboard for Duets) | Yes | Yes |
| Metronome | Yes | Yes |
| Transpose Function | Yes (-6 to +6 semitones) | Yes (-6 to +6 semitones) |
| Tuning Adjustment | Yes (414.8 Hz to 466.8 Hz) | Yes (414.8 Hz to 466.8 Hz) |
| Built-in Songs | 50 Classical Songs | 50 Classical Songs |
| Internal Recording | 2-Track Recording | 2-Track Recording |
| USB-to-Host (MIDI Support) | Yes | Yes |
| Bluetooth | ❌ No | ❌ No |
| Headphone Jacks | 2 × 1/4″ (6.35mm) stereo jacks | 2 × 1/4″ (6.35mm) stereo jacks |
| Line Outputs | ❌ No (Must use headphone jack) | ❌ No (Must use headphone jack) |
| Sustain Pedal Support | 3 Pedals (Soft, Sostenuto, Sustain with half-pedal function) | 3 Pedals (Soft, Sostenuto, Sustain with half-pedal function) |
| Power Consumption | 13W | 13W |
| My individual reviews | Yamaha YDP-165 review | Yamaha YDP-S55 review |
Key Takeaways:
- YDP-165 offers better sound projection thanks to its two-way speaker system, which produces clearer treble and richer midrange frequencies.
- YDP-S55 is more compact, making it ideal for small spaces while still offering the same sound engine and key action as the YDP-165.
- Neither model has Bluetooth, which some competitors (like Roland F701) do offer.
- Both models support Yamaha’s Smart Pianist app via USB, providing extra features like graphical controls and chord recognition.
Final Recommendation:
- Choose the Yamaha YDP-165 if you prioritize richer sound projection and a traditional upright piano design.
- Choose the Yamaha YDP-S55 if you need a sleek, space-saving piano without compromising on sound and feel.
Both models deliver excellent performance for their price, making them strong contenders in the mid-range digital piano market. 🎹
Overview of the Two Pianos
The Yamaha YDP-165 and Yamaha YDP-S55 are two mid-range digital pianos from Yamaha’s Arius series, a lineup that bridges the gap between beginner-friendly entry-level models and more advanced Clavinova pianos. These two models aim to deliver an authentic acoustic piano experience at an affordable price while catering to different space requirements and design preferences.
At first glance, the YDP-165 and YDP-S55 seem almost identical in terms of core features. Both come with an 88-key Graded Hammer 3 (GH3) action, Yamaha’s CFX grand piano sampling, Virtual Resonance Modeling Lite (VRM Lite) for added realism, and a built-in 40W speaker system. They also offer three built-in pedals, making them suitable for serious piano learners and intermediate players looking for an acoustic-like experience.
However, despite these similarities, their main difference lies in their design and speaker configuration. The YDP-165 follows a traditional console-style design, making it resemble an upright piano. It has a more powerful two-way speaker system, which provides richer and more natural sound projection. On the other hand, the YDP-S55 is a slim, space-saving alternative, ideal for apartments or smaller rooms, without compromising on key action or sound quality.
While both models lack Bluetooth connectivity, they do support USB-to-host connections, allowing integration with Yamaha’s Smart Pianist app and other MIDI-based software.
Overall, both the YDP-165 and YDP-S55 deliver a fantastic playing experience for their price range. The choice between them ultimately comes down to personal preferences, space constraints, and aesthetic considerations. If you prefer a more traditional piano look and a slightly richer sound, the YDP-165 is the better choice. However, if you need a more compact, modern-looking instrument, the YDP-S55 is a great alternative without sacrificing performance.
Design & Build Quality
When choosing a digital piano, design and build quality are crucial factors, especially if you plan to place the instrument in a living room, study, or bedroom. The Yamaha YDP-165 and Yamaha YDP-S55, while functionally similar, offer different aesthetics, space requirements, and build materials that cater to different needs.
Yamaha YDP-165: A Classic, Upright-Style Digital Piano
The Yamaha YDP-165 follows a traditional console-style digital piano design, making it a great choice for those who prefer the look of an acoustic upright piano. It comes with a solid wooden cabinet, an integrated music stand, and a sliding key cover, all of which contribute to its premium, furniture-like appearance.
Aesthetic & Finishes
The YDP-165 is available in four different finishes:
- Black – A modern, sleek finish that suits contemporary interiors.
- Dark Rosewood – A rich, warm finish that mimics the look of traditional acoustic pianos.
- White – A clean, elegant option that brightens up a room.
- White Ash – A unique, slightly textured light-wood finish for a Scandinavian-style home.
These multiple color options make it easier to match the piano with different home decors. If you’re placing it in a formal living room, music room, or a dedicated practice space, the YDP-165’s classic look will likely blend seamlessly with the surroundings.
Build Quality & Materials
The wooden cabinet of the YDP-165 feels sturdy and well-built. Yamaha has designed it to withstand daily use, making it a reliable choice for long-term ownership. The keys are covered by a sliding wooden key cover, which helps protect them from dust and debris when not in use.
At 42 kg (92.6 lbs), the YDP-165 is solid and stable, ensuring it doesn’t shift or wobble while playing. However, its bulkier size makes it less portable, so once set up, it’s best to keep it in a fixed position.
Pedal System
The YDP-165 comes with a built-in, three-pedal unit, consisting of:
- Soft Pedal (Una Corda)
- Sostenuto Pedal
- Sustain Pedal with Half-Pedal Support
This full pedal setup mimics what you’d find on an acoustic piano, making it a great option for serious piano students who want to practice proper pedaling techniques. The half-pedal support allows for gradual control over sustain, making it useful for expressive playing.
Yamaha YDP-S55: A Sleek, Space-Saving Alternative
The Yamaha YDP-S55, on the other hand, is designed with a modern, minimalist approach. It has a compact and slim profile, making it ideal for apartments, small rooms, or homes where space is limited. Unlike the YDP-165, which closely resembles an acoustic piano, the YDP-S55 looks more like a sleek, modern piece of furniture, making it well-suited for contemporary interiors.
Aesthetic & Finishes
The YDP-S55 is available in two color options:
- Black – A sophisticated, professional look that matches modern and industrial-style decors.
- White – A fresh, minimalist option that blends well with clean, light-colored interiors.
Compared to the YDP-165, the YDP-S55 lacks the dark rosewood and white ash finishes, which means it has fewer customization options in terms of aesthetics. However, its slim, streamlined design makes it stand out in a different way—it looks sleek and contemporary rather than traditional and bulky.
Build Quality & Materials
The YDP-S55 is constructed using high-quality materials, but unlike the YDP-165, its cabinet is noticeably thinner and more lightweight. It still feels sturdy, but it’s clear that Yamaha designed it with portability and space efficiency in mind.
One of the biggest design differences is the folding key cover. Instead of a sliding wooden cover like the YDP-165, the YDP-S55 features a flip-top lid that folds up to serve as a music stand when opened. This is a clever, space-saving solution that enhances its minimalist look while still offering protection for the keys when not in use.
At 40 kg (88.2 lbs), the YDP-S55 is slightly lighter than the YDP-165, which makes it a bit easier to move if necessary. However, since it is still a console-style digital piano, it’s not designed for frequent relocation.
Pedal System
Like the YDP-165, the YDP-S55 includes a three-pedal unit:
- Soft Pedal (Una Corda)
- Sostenuto Pedal
- Sustain Pedal with Half-Pedal Support
Despite its slim design, Yamaha did not compromise on the pedal setup, ensuring that the YDP-S55 still provides a realistic playing experience. The half-pedal support is present here as well, which is great for intermediate and advanced players who need expressive control over sustain.
Size & Space Considerations
One of the biggest deciding factors between the YDP-165 and the YDP-S55 is how much space you have available.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Width | 135.7 cm | 135.3 cm |
| Depth | 42.2 cm | 29.6 cm |
| Height | 84.9 cm | 79.2 cm |
| Weight | 42 kg | 40 kg |
Key Takeaways:
- The YDP-165 is deeper (42.2 cm vs. 29.6 cm), meaning it takes up more floor space.
- The YDP-S55 is more compact, making it ideal for smaller rooms.
- The YDP-165 is taller, giving it a more traditional, upright piano appearance.
- Both pianos are the same width, so side-to-side space isn’t a major factor.
- The YDP-165 is slightly heavier, but both are fairly substantial in weight.
If you have a dedicated music space, the YDP-165’s traditional design will look great. However, if you need to fit the piano into a smaller room, the YDP-S55 is the better option due to its compact depth and sleek design.
Which One Has the Better Design?
The answer depends on your priorities:
✅ Choose the Yamaha YDP-165 if you:
- Want a classic upright piano look.
- Prefer a more solid, furniture-like build.
- Have enough space for a deeper, bulkier cabinet.
- Want a richer sound projection (due to better speaker positioning).
✅ Choose the Yamaha YDP-S55 if you:
- Need a space-saving, slim design.
- Prefer a modern, minimalist look.
- Want a folding lid instead of a sliding key cover.
- Have a small apartment or limited space.
Both pianos are well-built and stylish, but the YDP-165 is more traditional and solid, while the YDP-S55 is more modern and compact. Your final decision should be based on your space constraints, aesthetic preferences, and how much of a “real piano” feel you want in your home.
Keyboard & Playing Feel
One of the most critical factors when choosing a digital piano is how the keyboard feels under your fingers. If you’re serious about playing, whether as a beginner or an advanced pianist, you’ll want a piano that feels natural, expressive, and as close to an acoustic piano as possible.
The Yamaha YDP-165 and Yamaha YDP-S55 both use the Graded Hammer 3 (GH3) keyboard action, which is a high-quality weighted key system designed to replicate the feel of an acoustic grand piano. However, let’s break down all the details of their keyboard action, responsiveness, and overall playing experience.
Graded Hammer 3 (GH3) Action – A Step Above Standard Keybeds
Both the YDP-165 and YDP-S55 feature Yamaha’s Graded Hammer 3 (GH3) action, a high-quality key action system that offers a more realistic weight and responsiveness compared to lower-end models like the Graded Hammer Standard (GHS) found in cheaper Yamaha pianos such as the YDP-145 or P-125.
The GH3 action mimics the behavior of an acoustic piano by incorporating three main elements:
- Graded Weighting:
- The lower keys (bass register) feel heavier, while the higher keys (treble register) feel lighter.
- This is exactly how a real grand piano feels, since the bass hammers in an acoustic piano are larger and heavier than the ones in the treble range.
- Triple Sensor System:
- The GH3 action includes three sensors instead of two, allowing for faster key repetition and better note articulation.
- This means you can play repeated notes smoothly, even when not fully releasing the key—a crucial feature for advanced pieces requiring quick key repetition.
- Cheaper key actions with only two sensors (like the GHS) often feel sluggish when playing trills or fast passages, making the GH3 action a superior choice.
- Escapement Mechanism (Simulated Let-Off):
- GH3 includes a simulated escapement mechanism, which means the keys have a slight “notch” or resistance when pressed lightly, mimicking how an acoustic piano’s hammer mechanism disengages from the strings.
- This feature is more subtle than on high-end models like the Clavinova series, but it still enhances the realism of the key action.
Overall, the GH3 action in both the YDP-165 and YDP-S55 provides an excellent playing experience, offering a responsive, well-weighted, and dynamic touch that feels far superior to entry-level digital pianos.
Keytops: Synthetic Ivory & Ebony for a Premium Touch
Another major selling point of both models is their synthetic ivory and ebony keytops.
- Many lower-end digital pianos have smooth, glossy plastic keys, which can feel cheap and slippery, especially during extended playing sessions.
- The YDP-165 and YDP-S55 have textured key surfaces, which absorb moisture from your fingers and provide better grip, similar to real acoustic piano keys.
- This is especially useful for players with sweaty hands, as it prevents fingers from slipping off the keys during rapid or forceful playing.
The key texture isn’t overly rough, but it provides a nice subtle grip, making playing more comfortable and secure than on pianos with completely smooth plastic keys.
Weight & Resistance of the Keys
Both the YDP-165 and YDP-S55 offer a solid, realistic key weight, but how does it compare to real acoustic pianos?
- The GH3 action is slightly lighter than a real grand piano, but it’s still heavier than the GHS action found in budget digital pianos.
- The key weight is well-balanced—not too heavy for beginners, but still offering enough resistance for experienced players who need expressive control.
- Some higher-end digital pianos (like Yamaha’s Clavinova series) offer even more realistic actions, such as GrandTouch-S, which has longer key sticks and wooden construction, but those are much pricier than the YDP series.
For most players, the GH3 action will feel very comfortable, responsive, and close enough to an acoustic piano for serious practice.
Dynamic Control & Expressiveness
One of the most important aspects of a good digital piano is how well it responds to different levels of touch. This is known as velocity sensitivity—or, simply put, how well the piano translates your playing dynamics into different volume levels.
Both the YDP-165 and YDP-S55 offer excellent dynamic control, thanks to:
- GH3’s triple-sensor system, which accurately detects how fast or slow you press the keys.
- Yamaha’s high-quality sound engine (CFX concert grand piano sampling), which ensures smooth, natural volume changes from soft pianissimo to powerful fortissimo.
Whether you play with a light touch for delicate pieces or with forceful key strikes for dramatic passages, the piano will accurately reproduce your intended expression.
Additionally, both models come with four levels of touch sensitivity settings:
- Soft – Requires less force to reach high volumes.
- Medium (default) – Provides a balanced, natural response.
- Hard – Requires more force to play loudly, mimicking grand pianos with heavier actions.
- Fixed – No velocity sensitivity (all notes play at the same volume, regardless of touch).
These settings allow players to customize the response based on their playing style or preference.
Noise & Key Action Sound
One minor drawback of the GH3 action (compared to high-end wooden actions) is that it can produce some noise when played aggressively.
- When playing softly, the keys are quiet and smooth.
- However, when playing fast or heavily, the keybed can produce a faint thudding sound as the keys return to their resting position.
- This isn’t a dealbreaker, but if you’re using the piano in a quiet apartment at night, you might notice the mechanical key noise.
That said, this is common in most digital pianos, and the noise level is much lower than cheaper plastic key actions found in budget models.
Comparison to Other Key Actions
To put things into perspective, here’s how the GH3 action in the YDP-165 and YDP-S55 compares to other Yamaha key actions:
| Key Action | Found In | Key Feel & Features |
|---|---|---|
| GHS (Graded Hammer Standard) | YDP-145, P-125 | Lighter action, only 2 sensors, plastic keys |
| GH3 (Graded Hammer 3) | YDP-165, YDP-S55 | Heavier action, 3 sensors, synthetic ivory/ebony keytops |
| GrandTouch-S | Clavinova CLP-725+ | Longer keys, wooden construction, escapement |
The GH3 action sits in the middle—it’s a significant step up from GHS but not quite at the level of high-end wooden actions found in premium Clavinova models.
Final Verdict: Which One Feels Better?
Since both the YDP-165 and YDP-S55 use the exact same GH3 key action, there is no difference in their playing feel.
- If you’re choosing based on key action alone, you can pick either model and get the same experience.
- The decision will come down to design preferences, speaker differences, and available space rather than how the keys feel.
If you’re looking for a realistic, high-quality key action without spending thousands on a Clavinova, the GH3 in the YDP-165 and YDP-S55 is an excellent choice for both beginners and advanced players alike. 🎹
Sound Quality
Sound quality is one of the most important factors when choosing a digital piano, as it directly affects how immersive and enjoyable the playing experience is. While the Yamaha YDP-165 and YDP-S55 share the same sound engine, there are some subtle differences in how they project sound due to their speaker design.
In this section, we’ll break down their sound engine, sampling technology, polyphony, resonance features, and overall tonal characteristics, helping you decide which model best fits your musical needs.
Yamaha CFX Grand Piano Sound Engine
Both the YDP-165 and YDP-S55 are powered by Yamaha’s CFX grand piano sampling, which is the same sound source used in higher-end Clavinova models.
What is CFX Sampling?
- The CFX sound engine is based on recordings of Yamaha’s flagship 9-foot CFX concert grand piano, a world-class instrument known for its bright, powerful tone and exceptional dynamic range.
- Yamaha captured these samples using high-definition recording techniques to preserve every nuance, resonance, and tonal detail from the original acoustic instrument.
- As a result, the YDP-165 and YDP-S55 deliver a rich, expressive piano sound that feels natural and immersive.
How Does It Compare to Other Digital Pianos?
- The CFX sound engine is a big step up from the AWM Stereo Sampling used in cheaper models like the YDP-145 or P-125.
- The clarity and depth of the CFX sound engine make the YDP-165 and YDP-S55 stand out from lower-end digital pianos, especially when playing with dynamic expression.
- However, it doesn’t have the same depth as Yamaha’s advanced GrandTouch sound engines in Clavinova pianos, which feature more detailed multi-layer sampling and enhanced resonance algorithms.
Polyphony – How Many Notes Can You Play at Once?
Both the YDP-165 and YDP-S55 offer 192-note polyphony, which is more than enough for advanced playing.
What is Polyphony?
- Polyphony refers to how many notes a digital piano can produce at once.
- If a piano has low polyphony (e.g., 64 or 128 notes), complex passages may cut off sustained notes, making them sound unnatural.
- 192-note polyphony ensures smooth, full sound reproduction, even when playing:
- Fast classical pieces (e.g., Chopin Etudes, Rachmaninoff Preludes)
- Layered sounds (e.g., playing piano with strings simultaneously)
- Sustained pedal-heavy passages
Compared to cheaper digital pianos with 128-note polyphony, the YDP-165 and YDP-S55 perform significantly better, allowing for richer, more realistic sound layering.
Virtual Resonance Modeling Lite (VRM Lite) – Adding Realism
A great acoustic piano doesn’t just produce individual notes—it resonates as a whole instrument. Yamaha replicates this effect with VRM Lite (Virtual Resonance Modeling Lite), a feature included in both the YDP-165 and YDP-S55.
How VRM Lite Enhances Sound
- When you play an acoustic piano, the strings, soundboard, and cabinet vibrate together, producing harmonic overtones and resonance that add warmth and depth to the sound.
- VRM Lite simulates these natural resonances, making the digital piano sound more organic and immersive.
- This feature works in real-time, adjusting the resonance based on which keys are played, how hard they’re struck, and how the sustain pedal is used.
How Does It Compare to Full VRM?
- High-end Clavinova models (like the CLP-735 and above) have full VRM, which allows even greater complexity in the resonance simulation.
- However, VRM Lite still does a great job of adding warmth and realism, making both the YDP-165 and YDP-S55 sound much more natural than pianos without this feature.
Damper Resonance & Sustain Pedal Behavior
Another key factor in sound realism is how the sustain pedal affects the tone. Both the YDP-165 and YDP-S55 feature Damper Resonance, which simulates how an acoustic piano responds when the sustain pedal is pressed.
How It Works
- On an acoustic piano, pressing the sustain pedal lifts all the dampers, allowing unplayed strings to resonate sympathetically with the played notes.
- In a digital piano without this feature, sustained notes can sound flat and artificial.
- The YDP-165 and YDP-S55 accurately recreate this effect, making the sustain pedal feel more natural and expressive.
Additionally, both models support half-pedaling, meaning you can control the level of sustain depending on how far you press the pedal—just like on an acoustic piano.
Tone & Sound Character – How Do They Compare?
Since both models use the same CFX sound engine, their tonal characteristics are virtually identical. However, the speaker differences (covered in the next section) can slightly affect the sound perception.
Overall Tonal Qualities of the YDP-165 and YDP-S55:
- Bright & Clear Treble: Notes in the higher register are crisp and articulate, great for expressive melodies.
- Rich Midrange: The middle octaves have good warmth and body, making chords and harmonies sound full.
- Powerful Bass: The low register is strong, though not quite as deep as a real acoustic grand.
Ideal Genres & Playing Styles
- The CFX grand piano sound is versatile, making it suitable for classical, jazz, pop, and even film music.
- If you prefer a warmer, more mellow sound, you might need to adjust the EQ settings, as the default sound is slightly bright compared to Yamaha’s Bösendorfer samples found in Clavinova models.
Differences in Speaker Projection
Although both models use the same sound engine, their speaker design affects how the sound is projected.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Speaker Type | 2-way speakers | Full-range speakers |
| Power Output | 40W (2 x 20W) | 40W (2 x 20W) |
- The YDP-165 has a two-way speaker system, meaning it separates bass and treble frequencies more effectively, creating a richer, more detailed sound.
- The YDP-S55 uses full-range speakers, which still sound great, but lack the depth and clarity of a dedicated two-way system.
How This Affects the Sound:
- If you play without headphones, the YDP-165 sounds slightly fuller and more natural due to the better speaker design.
- If you mostly use headphones, the differences disappear, as both pianos output the same high-quality sampled sound.
Final Verdict: Which One Sounds Better?
🎵 Choose the YDP-165 if:
✅ You want better speaker projection with a richer, more natural tone.
✅ You plan to play without headphones often.
✅ You want a slightly more immersive listening experience.
🎵 Choose the YDP-S55 if:
✅ You need a more compact digital piano without sacrificing sound quality.
✅ You mainly play with headphones (since the internal speakers matter less in this case).
✅ You prefer a sleek, space-saving design over slightly better speaker projection.
Both models offer fantastic sound quality, but the YDP-165 has a slight edge in speaker performance due to its two-way speaker system. 🎹
Speaker System
The speaker system of a digital piano plays a crucial role in how the sound is delivered to the player and the room. Even though the Yamaha YDP-165 and YDP-S55 share the same 40W power output, their speaker configurations are slightly different, which affects sound depth, projection, and clarity.
In this section, we’ll analyze their speaker placement, frequency response, sound dispersion, and real-world performance, helping you understand which model will provide the best auditory experience for your playing environment.
Speaker Power & Configuration: Key Differences
Both the YDP-165 and YDP-S55 feature dual 20W speakers, giving them a total output power of 40W. However, the way these speakers are designed and positioned impacts their performance.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Speaker Configuration | 2-way speaker system | Full-range speaker system |
| Speaker Size | 12 cm + 4 cm (per side) | 12 cm (per side) |
| Total Power Output | 40W (2 x 20W) | 40W (2 x 20W) |
| Speaker Placement | Inside cabinet, facing downwards | Inside cabinet, facing downwards |
| Acoustic Optimizer | Yes | Yes |
- The YDP-165 features a two-way speaker system, consisting of separate 12 cm and 4 cm drivers on each side.
- The YDP-S55 uses a single full-range 12 cm speaker per side, meaning it lacks the dedicated high-frequency driver found in the YDP-165.
What Does This Mean for Sound Quality?
- The YDP-165’s two-way speaker system produces clearer high frequencies because it uses a separate tweeter (4 cm driver) in addition to the larger 12 cm speaker.
- The YDP-S55, having only full-range speakers, does not differentiate between bass and treble as effectively, resulting in a slightly flatter sound compared to the YDP-165.
- While both models have 40W of power, the YDP-165 has a richer and more natural sound projection, particularly in the treble and midrange frequencies.
Speaker Placement & Sound Dispersion
Both models use downward-facing speakers, meaning the sound is projected towards the floor, reflecting off surfaces to create a broader soundstage.
Pros of Downward-Facing Speakers:
✅ Distributes sound evenly across a room.
✅ Creates a fuller sound by allowing natural reflections.
✅ Prevents harsh, direct sound projection, making the tone softer and more realistic.
Cons of Downward-Facing Speakers:
❌ Sound may feel slightly muted if placed on thick carpeting.
❌ Less direct clarity compared to front-facing speakers (common in stage pianos).
If you’re using either piano in a room with hard flooring (wood, tile, laminate), the speakers will project sound more effectively than in a room with thick carpeting, which can absorb some of the sound energy.
Clarity & Frequency Response: Which One Sounds Fuller?
One of the biggest differences between the YDP-165 and YDP-S55 is how detailed and natural the sound feels, particularly when playing complex pieces with many overlapping notes.
1. High Frequencies (Treble Clarity – Melodies, Articulation)
- The YDP-165 produces clearer, more articulate treble tones due to its dedicated tweeters.
- The YDP-S55 still sounds good, but lacks the same level of crispness, making melodic passages slightly less defined.
2. Midrange Frequencies (Warmth & Body – Chords, Left-Hand Playing)
- Both models deliver rich, well-balanced midrange frequencies, making chords and harmonies sound full.
- However, the YDP-165’s two-way system gives it a bit more separation, allowing each note in a chord to sound clearer.
3. Low Frequencies (Bass Depth – Power & Presence)
- The YDP-165 and YDP-S55 perform equally well in the bass range, thanks to their large 12 cm speakers.
- However, the YDP-165’s improved speaker separation adds slightly more realism to the lowest octave, especially when using the sustain pedal.
Volume & Projection: How Loud Do They Get?
Since both models have 40W of total power output, their maximum volume is the same. However, due to the YDP-165’s better speaker design, its sound has more presence and depth, making it feel louder even at the same volume level.
Best Use Cases for Each Model:
- The YDP-165 is better suited for larger rooms or spaces where you want the sound to fill the entire area more naturally.
- The YDP-S55 is ideal for smaller rooms or practice environments where you don’t need as much sound dispersion.
- If you plan to play with headphones most of the time, the speaker differences won’t matter, as both models output the same high-quality sampled sound through headphones.
Intelligent Acoustic Control (IAC) – Balancing the Sound at Low Volumes
Both the YDP-165 and YDP-S55 include Yamaha’s Intelligent Acoustic Control (IAC), a feature designed to preserve sound clarity when playing at low volumes.
How IAC Works:
- When you lower the volume, human ears naturally perceive bass and treble frequencies as weaker.
- IAC compensates for this by subtly boosting the bass and treble, ensuring the sound remains balanced and full, even at quiet levels.
This is particularly useful for late-night practice when you don’t want to disturb others but still want a rich sound.
Which Speaker System is Better?
If you’re choosing between the YDP-165 and YDP-S55 based on speaker performance, here’s a quick summary of which one might be the better fit for you:
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Speaker System | 2-way speakers (12 cm + 4 cm) | Full-range speakers (12 cm) |
| Treble Clarity | Better clarity due to tweeters | Good, but less detailed |
| Midrange Warmth | Fuller, richer tone | Warm, but slightly flatter |
| Bass Depth | Deep and realistic | Slightly less depth |
| Sound Projection | More spacious and immersive | More compact, good for small rooms |
| Best For: | Larger spaces, richer tone seekers | Smaller rooms, modern aesthetics |
Final Verdict: Which One Should You Choose?
🎵 Choose the Yamaha YDP-165 if:
✅ You want the best possible sound projection with clearer treble and richer midrange.
✅ You plan to play without headphones often and want the most immersive sound experience.
✅ You prefer a more traditional upright-piano sound projection.
🎵 Choose the Yamaha YDP-S55 if:
✅ You need a slim, space-saving piano with good overall sound quality.
✅ You mainly play with headphones (since speaker differences won’t matter in this case).
✅ You prefer a modern, minimalist design over slightly better speaker performance.
Both models have great sound quality, but the YDP-165 has the edge in speaker performance due to its two-way speaker system, better treble clarity, and richer projection. 🎶
Features & Functions
While sound quality and key action are the most crucial aspects of a digital piano, features and functions also play a significant role in the overall experience. Features like different instrument voices, recording capabilities, metronome settings, and interactive learning tools can enhance both practice and performance.
The Yamaha YDP-165 and YDP-S55 share most of their features, as they are both part of Yamaha’s Arius series and use the same CFX sound engine and GH3 keyboard action. However, small design differences and intended use cases may influence how these features benefit different types of players.
Let’s take an in-depth look at all the major functions these two models offer, analyzing how they compare and which might be a better fit for your needs.
1. Built-in Instrument Voices: More Than Just a Piano
Even though both the YDP-165 and YDP-S55 are marketed as digital pianos, they come with a variety of instrument sounds that allow for more expressive playing and experimentation.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Total Voices | 10 | 10 |
| Main Piano Sound | Yamaha CFX Concert Grand | Yamaha CFX Concert Grand |
| Other Sounds | Electric pianos, organs, strings, harpsichord, vibraphone | Electric pianos, organs, strings, harpsichord, vibraphone |
Breakdown of Available Voices
- Yamaha CFX Concert Grand – The default sound, featuring Yamaha’s world-class CFX grand piano sampling.
- Mellow Grand Piano – A softer, more intimate piano tone.
- Pop Grand Piano – A brighter piano tone, great for pop and modern music.
- Electric Piano 1 – A classic Fender Rhodes-style electric piano.
- Electric Piano 2 – A brighter, more bell-like DX7-type sound.
- Harpsichord – A baroque-style plucked string sound, common in early classical music.
- Vibraphone – A jazz-style percussive mallet instrument with a warm, metallic sound.
- Pipe Organ – A majestic, church organ sound.
- Jazz Organ – A Hammond-style electric organ.
- Strings – A lush orchestral string section sound.
While the selection isn’t as extensive as some higher-end digital pianos, it still adds variety for different genres. The inclusion of electric pianos, organs, and strings makes it possible to explore a wider range of music styles beyond just classical piano.
2. Dual Mode (Layering Two Sounds)
Both the YDP-165 and YDP-S55 feature Dual Mode, which allows players to layer two instrument sounds together.
How Dual Mode Works:
- You can combine two voices to play simultaneously.
- For example, layering piano + strings creates a rich, cinematic effect.
- You can adjust the balance between the two sounds, making one louder than the other.
This feature is especially useful for ballads, film music, and expressive solo performances, allowing for richer harmonics and depth.
3. Duo Mode (Split Keyboard for Duets & Teaching)
Both models also feature Duo Mode, which splits the keyboard into two equal halves, each with the same octave range.
Why Duo Mode is Useful:
- Ideal for piano lessons, allowing a teacher and student to play side by side.
- Great for four-hand duets, even without a second piano.
- Useful for practice in split sections, where one hand plays with a guide from the other side.
This is a particularly useful feature for music teachers and students, making learning more interactive and efficient.
4. Built-in Songs & Lesson Mode
Both the YDP-165 and YDP-S55 come with 50 preset classical songs, which can be used for listening, practice, or learning.
How the Lesson Mode Works:
- The left- and right-hand parts of each song can be muted separately, allowing you to practice one hand at a time.
- This is great for learning complex pieces, as you can slowly practice one part while the piano plays the other.
- Songs can be played back at variable speeds, allowing beginners to start slow and gradually build up tempo.
While this is a useful feature for self-learning, the built-in song selection is limited to classical pieces. If you want to practice modern songs, you’ll need to connect the piano to Yamaha’s Smart Pianist app (covered in the Connectivity section).
5. Metronome & Transpose Functions
For serious practice, a built-in metronome is essential, and both models include one.
Metronome Features:
- Adjustable tempo (20 to 280 BPM).
- Adjustable time signature (e.g., 3/4, 4/4, etc.) for practicing different rhythms.
Additionally, both models include a Transpose function, which allows you to shift the key of the entire keyboard up or down in semitone increments.
Why is Transpose Useful?
- Helps you play along with singers without having to learn new fingerings.
- Makes it easy to play in different keys without retraining muscle memory.
- Useful for learning music theory and improvisation.
6. Recording & Playback
Both pianos allow you to record your performances internally.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Internal Recording | Yes | Yes |
| Max Tracks | 2 | 2 |
What Can You Do With the Recording Feature?
- Record and play back your performances for self-assessment.
- Record one hand at a time, allowing for practice and analysis.
- Record complex compositions in two layers (e.g., left hand first, then overdub the right hand).
While it’s not as advanced as multi-track MIDI recording found in workstation keyboards, it’s good enough for practice and composition purposes.
7. Smart Pianist App Integration
While this technically falls under connectivity, it’s worth mentioning that both the YDP-165 and YDP-S55 are compatible with Yamaha’s Smart Pianist app.
What Smart Pianist Adds:
- Graphical controls for selecting instrument sounds and settings.
- Interactive sheet music display for the built-in songs.
- Chord recognition feature, which generates chord charts from your favorite songs.
Although Smart Pianist requires a USB connection (since neither model has Bluetooth), it greatly enhances the functionality of the piano, making it a valuable feature for beginners and intermediate players.
Final Verdict: Which One Has Better Features?
Since the YDP-165 and YDP-S55 share the exact same functions, there is no winner in terms of features.
✅ Choose the YDP-165 if:
- You prefer a more immersive speaker system for playing without headphones.
- You want a traditional upright piano look with all these features.
✅ Choose the YDP-S55 if:
- You need a slimmer, more compact digital piano.
- You play mostly with headphones, making speaker differences irrelevant.
Both models offer great features for practice, performance, and learning, making them excellent choices for home use. 🎶
Connectivity
While digital pianos are primarily designed to replicate the feel and sound of an acoustic piano, modern players often expect additional connectivity options for recording, learning, composing, and interactive music experiences.
Both the Yamaha YDP-165 and YDP-S55 provide a limited but functional set of connectivity features, allowing integration with computers, tablets, and smartphones for enhanced control and expanded functionality. However, neither model includes Bluetooth, which is a notable drawback compared to some competing digital pianos.
In this section, we’ll explore all the available connectivity options, their practical applications, and what you can and can’t do with these two digital pianos.
1. USB-to-Host (MIDI and Audio Data Transfer)
The primary connectivity feature on both the YDP-165 and YDP-S55 is the USB-to-Host port, which allows the piano to connect to computers, tablets, and smartphones for a variety of uses.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| USB-to-Host (Type B) | Yes | Yes |
| MIDI Data Transfer | Yes | Yes |
| Audio Data Transfer | No | No |
What Can You Do With USB-to-Host?
- Use the piano as a MIDI controller for music production software like GarageBand, FL Studio, Logic Pro, or Ableton Live.
- Record MIDI performances directly to a computer for further editing, arranging, and production.
- Connect to learning apps like Simply Piano, Flowkey, or Piano Marvel to receive real-time feedback and interactive lessons.
- Use Yamaha’s Smart Pianist app (covered later) to unlock additional piano settings and functions.
Limitations of USB-to-Host
🚫 No direct audio transfer – Unlike some newer digital pianos, the YDP-165 and YDP-S55 cannot send digital audio through USB. This means:
- If you want to record actual piano audio, you’ll need to use the headphone output and an external audio interface.
- MIDI recording is supported, but MIDI does not capture the sound of the piano itself, only the performance data.
This limitation may be frustrating for musicians who want easy, high-quality recording without extra equipment.
2. No Bluetooth Connectivity – A Missed Opportunity?
One of the biggest drawbacks of both the YDP-165 and YDP-S55 is the lack of Bluetooth connectivity.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Bluetooth Audio | ❌ No | ❌ No |
| Bluetooth MIDI | ❌ No | ❌ No |
Why Would Bluetooth Be Useful?
- Bluetooth MIDI would allow wireless connection to apps like Smart Pianist, GarageBand, or Synthesia, eliminating the need for cables.
- Bluetooth Audio would enable wireless audio playback through the piano’s speakers, allowing users to play along with songs or backing tracks.
Many competing digital pianos, such as the Roland F701 and Kawai KDP120, include Bluetooth MIDI and/or Bluetooth Audio, making them more convenient for modern users.
While Yamaha’s higher-end Clavinova models offer Bluetooth, it’s disappointing that they didn’t include this feature in the Arius series.
3. Smart Pianist App Integration
Both the YDP-165 and YDP-S55 are compatible with Yamaha’s Smart Pianist app, which significantly enhances the functionality of the piano when connected via USB.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Smart Pianist Compatibility | Yes | Yes |
| Graphical Sound Selection | Yes | Yes |
| Chord Recognition from Audio | Yes | Yes |
| Sheet Music Display | Yes | Yes |
Key Features of Smart Pianist
- Graphical User Interface for Selecting Voices & Settings
- Instead of navigating through button combinations, you can easily select sounds and adjust settings using a visual touchscreen interface on your smartphone or tablet.
- Chord Chart Generation from Audio Files
- The app can analyze audio tracks from your music library and display the chords in real-time, allowing you to play along with songs even if you don’t have sheet music.
- Interactive Sheet Music Display
- The built-in classical pieces in the piano’s memory can be displayed as digital sheet music on the app, helping beginners learn songs more efficiently.
How to Connect Smart Pianist to the YDP-165 or YDP-S55
Since there’s no Bluetooth, you need a wired connection:
- For iOS (iPhone/iPad) – Use the Lightning to USB Camera Adapter + a standard USB cable.
- For Android Devices – Use a USB OTG adapter + a USB cable.
While Smart Pianist adds great functionality, having to use cables instead of Bluetooth feels like a missed opportunity for convenience.
4. Headphone Connectivity – Silent Practice Mode
Both the YDP-165 and YDP-S55 include dual headphone jacks, allowing for silent practice or duets.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Number of Headphone Jacks | 2 | 2 |
| Type of Jack | Standard 1/4″ (6.35mm) | Standard 1/4″ (6.35mm) |
Why Dual Headphone Jacks Matter
- Allows two people to practice together silently, great for duets or lessons.
- Lets one person listen while another plays, useful for teaching situations.
- Avoids the need for a headphone splitter, making the experience more convenient.
Since both models lack built-in Bluetooth Audio, headphones must be wired.
5. Line Output – Can You Connect External Speakers?
Neither the YDP-165 nor YDP-S55 include dedicated line outputs.
| Feature | Yamaha YDP-165 | Yamaha YDP-S55 |
|---|---|---|
| Line Out Ports | ❌ No | ❌ No |
🚫 What This Means
- If you want to connect external speakers or amplifiers, you must use the headphone jack, which isn’t ideal since headphone outputs are not designed for high-quality external amplification.
- Other brands (like Roland and Kawai) include dedicated stereo line outputs in some of their models, which would be a better option for professional use.
If you primarily play at home, this won’t be a big issue. However, if you plan to use your piano for performances, the lack of line outputs could be a limitation.
Final Verdict: Which One Has Better Connectivity?
Since both models share the same connectivity features, there is no difference between them in this category.
✅ Choose the YDP-165 or YDP-S55 if you:
- Want USB-MIDI compatibility for recording and app integration.
- Plan to use wired headphones for silent practice.
- Are okay with connecting Smart Pianist via USB instead of Bluetooth.
🚫 Avoid these models if you:
- Need Bluetooth MIDI or Bluetooth Audio for wireless convenience.
- Want built-in audio recording via USB (you’ll need an external audio interface).
- Require line outputs for external speakers or live performance.
While USB-to-Host is useful, the lack of Bluetooth and line outputs means these pianos aren’t the most feature-rich options for connectivity. 🎹
Here’s a 600-word expansion of the “Value for Money” section, analyzing whether the Yamaha YDP-165 and YDP-S55 are worth their price and how they compare to other options in their range.
Value for Money – Are the YDP-165 and YDP-S55 Worth It?
When investing in a digital piano, one of the most important considerations is value for money. Are you getting the best combination of sound, key action, features, and build quality for the price you’re paying?
Both the Yamaha YDP-165 and YDP-S55 fall into the mid-range category of home digital pianos, offering an experience beyond beginner models, but not quite reaching the high-end Clavinova series. But are they worth the price, or are there better alternatives?
To answer this, we’ll analyze how these pianos compare in price to competitors, what you’re actually paying for, and whether the extra cost is justified.
1. Price Comparison – How Much Do They Cost?
While prices fluctuate depending on location and retailer, here’s a general price range for both models:
| Model | Average Price (USD) |
|---|---|
| Yamaha YDP-165 | $1,500 – $1,700 |
| Yamaha YDP-S55 | $1,400 – $1,600 |
The YDP-S55 is slightly cheaper than the YDP-165, primarily due to its slimmer, more compact design and slightly different speaker system.
At this price point, both pianos sit above entry-level digital pianos (like the Yamaha YDP-145 or Casio PX-870) but remain more affordable than premium digital pianos (such as the Yamaha Clavinova CLP-735, which costs around $2,500+).
So, are these pianos worth this mid-range price tag?
2. What You’re Paying For – Key Features That Justify the Price
Both the YDP-165 and YDP-S55 offer a set of premium features that distinguish them from cheaper digital pianos:
| Feature | Why It Adds Value |
|---|---|
| GH3 (Graded Hammer 3) Keyboard Action | A realistic, triple-sensor key action that’s far superior to beginner-level pianos. It feels closer to an acoustic piano than the GHS action found in cheaper models. |
| Yamaha CFX Grand Piano Sound Engine | The same high-quality piano sample found in Clavinova models, offering a rich, detailed, and dynamic sound. |
| Virtual Resonance Modeling Lite (VRM Lite) | Adds realistic resonance effects, making the sound feel more natural and immersive. |
| 40W Speaker System | More powerful than most entry-level pianos, ensuring a full, well-balanced sound. |
| Three Pedals with Half-Pedal Support | Allows for more expressive playing, a feature not always available in cheaper models. |
| Smart Pianist App Compatibility | Expands the functionality of the piano, adding interactive learning tools, chord recognition, and graphical sound selection. |
These features make the YDP-165 and YDP-S55 well worth the extra investment over beginner models. However, they are not the most advanced digital pianos in Yamaha’s lineup, so let’s explore whether they justify their cost compared to competitors.
3. How Do They Compare to Competitors?
At this price range, there are several strong alternatives from other brands, each with its own strengths and weaknesses.
Competitor Models in the Same Price Range
| Model | Pros | Cons | Price |
|---|---|---|---|
| Yamaha YDP-165 | Superior two-way speakers, CFX grand piano sound, GH3 key action | No Bluetooth, no line outputs | $1,500 – $1,700 |
| Yamaha YDP-S55 | Compact design, same sound engine & key action as YDP-165 | Single full-range speakers (not two-way) | $1,400 – $1,600 |
| Casio PX-870 | Cheaper price, decent speaker system, realistic key action | Sound engine is not as detailed, sustain pedal feel isn’t as realistic | $1,200 – $1,400 |
| Roland F701 | Bluetooth connectivity, smooth key action, natural-sounding tones | Speaker system is only 26W (less powerful) | $1,500 – $1,700 |
| Kawai KDP120 | Superior wooden key action, rich sound quality | Speakers are only 40W but don’t project as well | $1,400 – $1,600 |
How the YDP-165 & YDP-S55 Compare:
✅ Better Key Action Than Casio PX-870 – The GH3 action is more refined than Casio’s Smart Scaled Hammer Action, making Yamaha the better choice for serious players.
✅ More Powerful Speakers Than Roland F701 – The 40W speakers on the YDP-165 and YDP-S55 are louder and fuller than the 26W system on the Roland F701.
❌ No Bluetooth Connectivity (Unlike Roland F701) – Roland offers Bluetooth MIDI & Bluetooth Audio, which makes it more versatile for modern players.
❌ No Wooden Key Action (Unlike Kawai KDP120) – Kawai’s RHCII action feels slightly more like an acoustic piano due to its longer pivot point and wooden components.
Overall, the YDP-165 and YDP-S55 offer a strong balance of quality, realism, and price, but lack modern features like Bluetooth and wooden key actions, which some competitors provide.
4. Who Should Buy the YDP-165 or YDP-S55?
These pianos are worth the investment if you fall into the following categories:
✅ Intermediate to Advanced Players Looking for an Acoustic Feel
- The GH3 key action and CFX grand piano sound engine make both models excellent for serious practice.
✅ Those Who Want a Beautiful Home Piano
- The YDP-165 has a traditional upright design, while the YDP-S55 offers a sleek, space-saving alternative.
✅ Pianists Who Want a Strong Speaker System
- The 40W output on both models is more powerful than many competitors.
✅ Users Who Will Use Smart Pianist for Learning & Customization
- Yamaha’s Smart Pianist app provides extra functionality, making these pianos great for learners and casual players.
5. Who Might Want to Look Elsewhere?
🚫 If You Need Bluetooth Connectivity
- Roland F701 offers Bluetooth MIDI and Audio, making it better for app-based learning and wireless use.
🚫 If You Want Wooden Key Action
- The Kawai KDP120 has a slightly more realistic key feel, making it better for pianists who prioritize acoustic-like touch.
🚫 If You’re on a Tighter Budget
- The Casio PX-870 offers similar features for a lower price, but with slightly weaker sound quality and key action.
Final Verdict: Are They Worth It?
Yes! The Yamaha YDP-165 and YDP-S55 provide great value for money due to their high-quality sound engine, solid key action, and strong speaker system.
However, competing brands offer more modern features like Bluetooth and wooden key actions, so buyers should consider their specific needs before making a decision.
If you want classic Yamaha sound and build quality, these models are well worth the price. 🎹
Final Verdict: Which One Should You Buy?
Choosing between the Yamaha YDP-165 and YDP-S55 ultimately comes down to your specific needs, space limitations, and personal preferences. While both models offer identical key action, sound engine, and features, their design and speaker configuration make them suited for different types of players.
Choose the Yamaha YDP-165 if:
✅ You want a traditional upright piano design that mimics an acoustic piano.
✅ You prefer a richer, more immersive sound with two-way speakers for better clarity.
✅ You have enough space to accommodate a full-sized console digital piano.
✅ You play without headphones frequently and need the best possible sound projection.
✅ You value a more solid, furniture-like build that blends well into a home setting.
Choose the Yamaha YDP-S55 if:
✅ You need a compact, space-saving piano for an apartment or small room.
✅ You prefer a modern, minimalist aesthetic rather than a classic upright look.
✅ You mainly use headphones, making the speaker differences irrelevant.
✅ You want a slightly more affordable alternative to the YDP-165 while keeping the same key action and sound quality.
Are They Worth the Money?
Both pianos offer great value for their price, featuring Yamaha’s GH3 action, CFX grand piano sound engine, 40W speakers, and Smart Pianist app compatibility. However, their lack of Bluetooth and line outputs may be a downside for some users.
For serious learners and home pianists, either model is an excellent long-term investment, but choosing the right one depends on whether you prioritize a traditional design (YDP-165) or a compact, space-saving option (YDP-S55). 🎹