Kawai ES520 Review

The Kawai ES520 sits in an interesting spot in the digital piano market. It’s positioned as a mid-range model, more advanced than basic entry-level instruments but not quite reaching the high-end professional stage pianos. At first glance, it promises a great balance of quality, features, and affordability. But does it live up to those expectations? I’ve spent a significant amount of time testing this piano, scrutinizing every detail from its design to its sound engine, and this is my full, unbiased review.

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Kawai ES520 Digital Piano Specifications

Feature	Details
Keyboard	88 fully weighted keys with Responsive Hammer Compact II (RHCII) action
Key Material	Plastic with matte finish (Ivory Touch)
Escapement	No
Touch Sensitivity	3 preset settings (Light, Normal, Heavy) + user customization
Sound Engine	Harmonic Imaging XL (HI-XL)
Piano Samples	Shigeru Kawai SK-EX, Kawai EX concert grands
Polyphony	192 notes
Number of Sounds	34 voices
Modes	Dual (Layer), Split, Four-Hand Mode
Virtual Technician	Adjustable parameters for voicing, resonance, key-off effect, etc.
Effects	Reverb (6 types), Chorus, Delay, EQ, Tremolo, Phaser
Speakers	40W Onkyo-designed speaker system (2 x 20W)
Headphone Outputs	2 x 1/4″ (6.35mm) stereo jacks
Audio Outputs	Stereo Line-Out (L/MONO, R)
Audio Inputs	1/8″ (3.5mm) stereo mini-jack
USB Connectivity	USB to Host (MIDI & Audio), USB to Device (File Playback)
Bluetooth	Bluetooth MIDI & Bluetooth Audio
MIDI	USB MIDI, Bluetooth MIDI (no 5-pin DIN port)
Pedal Support	Single sustain pedal (F-10H included, supports half-damper), Optional F-302 triple pedal unit
Metronome	Yes, with adjustable tempo and time signature
Rhythms	100 drum patterns
Recording	1-track MIDI recorder (no multi-track support)
File Playback	MP3, WAV (via USB)
Dimensions (Without Stand)	52.9” (W) x 14.5” (D) x 5.7” (H) / 134.0 cm x 37.5 cm x 14.5 cm
Weight	32.4 lbs (14.5 kg)
Power Supply	AC adapter (included)
Stand & Pedal Unit (Optional)	HM-5 stand and F-302 triple pedal unit available separately
Color Options	Matte Black, Matte White

First Impressions & Design

First Look: Clean and Modern Aesthetic

The Kawai ES520 strikes a balance between sleek modernity and functional design. Unlike some digital pianos that try to mimic the look of traditional acoustic pianos with wooden paneling and ornate features, the ES520 embraces a minimalist, contemporary approach. It’s available in two colors: Matte Black and Matte White. The black version has a classic, professional look, while the white version offers a fresh, modern aesthetic that can blend well with minimalist home interiors.

At first glance, the ES520 might not look particularly flashy, but it’s clear that Kawai put thought into keeping the design clean, user-friendly, and practical. The control panel is streamlined and intuitive, with a combination of physical buttons and a simple OLED display, making it easy to navigate without feeling overwhelmed by excessive controls.

While some digital pianos in this price range have a more complex interface with touch screens or multiple layers of menu navigation, Kawai has kept it simple. This is a good thing. It means less time spent figuring out controls and more time focusing on playing.

Build Quality: Sturdy but Lightweight

One of the key advantages of the ES520 is that it is relatively lightweight for a digital piano with weighted keys and built-in speakers. Weighing 32.4 lbs (14.5 kg), it is heavier than entry-level models but much lighter than some of Kawai’s higher-end digital pianos.

This weight makes it manageable for gigging musicians who need to transport it frequently, while still being solid enough to feel stable on a stand. If portability is a concern, you can easily move it around your home, and it won’t be a hassle to transport to rehearsals or small performances. However, if you’re constantly gigging and need something ultra-lightweight, you might want to consider other options like the Roland FP-30X or Yamaha P-125, which are slightly lighter.

In terms of construction materials, the ES520 is primarily made of plastic, which helps keep the weight down. However, it doesn’t feel “cheap” or flimsy. The plastic casing has a smooth matte finish, which resists fingerprints and smudges better than glossy surfaces. The buttons and controls feel solid, with a satisfying click when pressed, avoiding the mushy feel of lower-end digital pianos.

The OLED screen is small but sharp and easy to read, providing clear text and settings information. It’s not a touchscreen, which some people might see as a downside, but in my opinion, physical buttons and a screen combo are often more reliable and easier to use in a performance setting.

Portability & Setup

Thanks to its manageable weight and streamlined design, the ES520 is easy to set up and move around. Unlike full console digital pianos, which require assembly and are meant to stay in one place, this model can be placed on a portable X-stand, a fixed wooden stand, or even a desk if necessary.

For those who want a more furniture-style setup, Kawai offers an optional matching stand (HM-5) and a three-pedal unit (F-302), which transform the ES520 into a more traditional-looking digital piano setup. The stand is sturdy, well-designed, and matches the finish of the piano, making it a good investment if you plan to keep the instrument in a fixed location. However, if portability is your priority, the piano works just fine with a standard X-stand or a double-braced stand for extra stability.

Control Panel & User Interface

Kawai has done an excellent job making the control panel intuitive and user-friendly. Instead of a cluttered interface with too many buttons, the ES520 keeps things simple:

• Buttons for quick access to sounds and functions
• An OLED display that clearly shows settings and selections
• A dial for adjusting parameters easily

Some digital pianos bury important functions within multiple menu layers, making it frustrating to access common features like metronome settings, reverb adjustments, or sound layering. Thankfully, the ES520 avoids that issue.

One particularly useful feature is the “Favorite” button, which allows you to save and quickly recall your most-used sounds and settings. This is great if you frequently switch between different tones (e.g., switching between a bright grand piano and a soft pad layer for a ballad).

The buttons are well-spaced and labeled, so there’s no confusion about what each one does. Even if you’ve never used a Kawai digital piano before, you’ll likely find the layout intuitive after just a few minutes of exploration.

Pedals: Basic Included, Optional Upgrade Available

Out of the box, the ES520 comes with a basic sustain pedal (Kawai F-10H), which is actually better than what some other brands include with their mid-range digital pianos. It’s a solid, well-built pedal with half-damper functionality, allowing for more nuanced sustain control compared to basic on/off sustain pedals.

However, if you’re planning to use the ES520 in a home setting, I highly recommend getting the optional F-302 three-pedal unit. This accessory mimics the traditional three-pedal setup of an acoustic piano (soft, sostenuto, and sustain), which is useful for classical players who need full pedal control. The optional pedal unit connects seamlessly to the ES520 and is essential if you’re using the piano with the matching HM-5 stand.

If you plan to use the ES520 for gigging, the included single sustain pedal is more than sufficient, and you won’t need to carry extra accessories unless you specifically require a soft or sostenuto pedal.

Music Rest: Functional but Standard

The ES520 includes a detachable music rest, which slots into the top of the piano. It’s a fairly standard plastic stand, sturdy enough to hold sheet music or a tablet, but nothing particularly special.

One minor drawback is that the angle of the music rest isn’t adjustable, which means that depending on your seating position and lighting, you might need to adjust your head position to see sheet music clearly. If you primarily use a tablet for reading sheet music, you might want to invest in a separate, adjustable music stand for a more comfortable viewing angle.

Overall Aesthetic & Fit in Different Settings

The ES520’s design is versatile enough to fit into a variety of settings:

• Home Use: Its clean, modern design allows it to blend well into home interiors, especially when paired with the optional stand. The white version, in particular, looks great in bright, contemporary spaces.
• Stage & Gigging: The compact and lightweight design makes it a good choice for gigging musicians who need a reliable, easy-to-transport instrument. It doesn’t have the rugged metal casing of some professional stage pianos, but as long as you handle it with care, it should hold up well.
• Studio Use: Thanks to its Bluetooth MIDI, USB connectivity, and line-out ports, the ES520 works well as a MIDI controller or studio piano. The simple, no-nonsense design means it won’t take up unnecessary space in a recording setup.

Verdict on Design & Build Quality

Pros:

✅ Sleek, modern, and minimalist design
✅ Lightweight yet sturdy for its category
✅ Intuitive control panel with an OLED screen
✅ Good button layout with easy navigation
✅ Comes with a decent sustain pedal (F-10H)
✅ Optional stand and pedal unit enhance aesthetics and functionality

Cons:

❌ Plastic casing (though well-built)
❌ Music rest is non-adjustable
❌ No touchscreen (some may prefer this)

Overall, the Kawai ES520 is well-designed for its price point. It’s not trying to be a high-end furniture-style digital piano, but it excels in portability, simplicity, and ease of use. The thoughtful button layout, lightweight build, and useful optional accessories make it an excellent choice for both home and gigging musicians.

Key Action: Responsive Hammer Compact II (RHCII) in Depth

One of the most important aspects of a digital piano is how the keys feel under your fingers. A great sound engine is meaningless if the action doesn’t deliver a realistic and enjoyable playing experience. Kawai is well-known for its high-quality key actions, and the Responsive Hammer Compact II (RHCII) used in the ES520 is a refined version of the action found in their entry-level models. It aims to strike a balance between affordability, realism, and portability, and in many ways, it succeeds. However, there are some trade-offs to consider, particularly for more advanced players.

Overview of the RHCII Action

The Responsive Hammer Compact II (RHCII) is a fully weighted, hammer-action keybed designed to mimic the feel of an acoustic grand piano. Unlike unweighted or semi-weighted actions found in cheaper digital pianos, the RHCII uses actual hammers to replicate the mechanical movement of a traditional piano.

Here are its key characteristics:

• Graduated weight – Heavier in the lower register, lighter in the higher register, just like a real piano.
• No springs – Uses a hammer mechanism instead of springs, which results in a more natural feel.
• Matte key surfaces – Both black and white keys have a slight texture, preventing slipping.
• Quiet key movement – Reduces mechanical noise when playing at low volumes or with headphones.

Key Weighting & Feel

The weighting of the RHCII action is heavier than most entry-level digital pianos but lighter than high-end Kawai models like the MP7SE or the ES920. If you’re upgrading from a cheap keyboard or a low-end digital piano, you’ll immediately notice the difference. The keys have a pleasant resistance that encourages proper finger technique, making it a solid choice for serious beginners and intermediate players.

However, if you’re used to a high-end acoustic piano, you may find the action slightly lighter than expected. Some players prefer a bit more resistance, especially for classical music that demands intricate dynamic control.

That being said, the RHCII action still feels more authentic than the key actions found in Yamaha’s GHS (Graded Hammer Standard) or Roland’s PHA-4 Standard, which are commonly found in competing models in this price range.

Repetition Speed & Key Responsiveness

One of the few limitations of the RHCII action is its repetition speed. While it is perfectly fine for most styles of music, extremely fast passages, such as trills and repeated notes, don’t feel as effortless as they do on higher-end Kawai actions like the Responsive Hammer III (RHIII) or Grand Feel Compact.

For example:

• Playing fast repetitions like Liszt’s La Campanella or Rachmaninoff’s Prelude in G minor requires a bit more effort compared to playing on an acoustic piano or a higher-end digital piano.
• Jazz pianists who frequently play rapid staccato runs or intricate bebop lines might notice a slight lag in response.

However, for the vast majority of players—including those playing pop, rock, blues, gospel, and most classical pieces—the ES520’s key action is more than sufficient. It only becomes a potential drawback for highly advanced pianists who need absolute precision in key repetition.

Key Texture & Material

Unlike some digital pianos that use glossy, slippery plastic keys, the Kawai ES520 features a matte key surface on both the black and white keys. This provides a slight grip that helps with finger control, especially during extended practice sessions.

Pros of the matte surface:
✅ Reduces finger slippage, especially in humid conditions
✅ Feels more refined and premium than glossy plastic keys
✅ Resembles the subtle texture of real ivory and ebony

Cons:
❌ Still plastic, not synthetic ivory or wooden keys
❌ Might not feel as luxurious as higher-end Kawai keybeds

For most players, the matte texture is a welcome feature, as it enhances grip without feeling rough or artificial. If you’re coming from a traditional acoustic piano with real ivory keys, you may still notice a difference, but it’s a step up from the slippery plastic keys found on cheaper digital pianos.

Escapement (Let-off) Simulation

One feature missing from the RHCII action is escapement (also known as let-off simulation).

On an acoustic grand piano, when you press a key very lightly, you can feel a slight notch or resistance before the hammer is released to strike the strings. This is known as escapement, and it’s an important aspect of how a grand piano feels to play. Some higher-end digital pianos replicate this feeling to improve authenticity.

The ES520 does not have escapement simulation, which means the keys feel smoother without that subtle notch.

Who will notice this?

• Classical pianists who are used to grand pianos may miss this detail.
• Advanced jazz players who rely on extreme dynamic sensitivity may feel a difference.

Who won’t notice?

• Most beginners and intermediate players won’t miss this feature at all.
• If you mainly play pop, rock, blues, or gospel, escapement isn’t critical.

While escapement is a nice feature to have, it’s generally found in higher-end digital pianos, and its absence here is not a dealbreaker—especially at this price point.

Noise & Stability of the Keys

One underrated aspect of digital piano key action is how noisy the keys are when played without sound. Some digital pianos suffer from loud key thumping, which can be annoying when practicing at night with headphones.

The Kawai ES520 is relatively quiet, with minimal mechanical noise compared to some competitors. The action feels smooth and well-lubricated, and there is no excessive wobbling or looseness in the keys.

However, over time, some players have reported that the RHCII action can develop a slight clunkiness, especially if the piano is played aggressively over long periods. While this is not a widespread issue, it’s something to keep in mind if you plan to use the piano heavily.

Comparison to Other Digital Pianos in the Same Price Range

Digital Piano	Key Action	Key Texture	Escapement	Best For
Kawai ES520	RHCII	Matte plastic	No	Balanced feel for most styles
Yamaha P-225	GHC (Graded Hammer Compact)	Smooth plastic	No	Slightly heavier feel, good for classical
Roland FP-60X	PHA-4 Standard	Textured synthetic ivory	Yes	Best for advanced players needing escapement
Casio PX-S3100	Smart Scaled Hammer Action	Smooth plastic	No	Ultra-compact but less realistic feel

• The Roland FP-60X offers escapement simulation and textured ivory-feel keys, making it a better choice for pianists seeking the most realistic action.
• The Yamaha P-225 has a slightly heavier feel but lacks the refinement of Kawai’s RHCII.
• The Casio PX-S3100 is the most compact but has a more artificial feeling action.

For a balance of realism, comfort, and versatility, the ES520 holds its own in this category.

Final Verdict: Is the RHCII Action Good Enough?

✅ Pros:

• Realistic hammer action with graduated weighting
• Matte key surface for better grip
• Quiet key movement with minimal mechanical noise
• Balanced feel, suitable for most genres

❌ Cons:

• Lacks escapement simulation
• Slightly lighter than an acoustic grand piano
• Not the fastest repetition speed for advanced players

For beginners, intermediate players, and even semi-professional musicians, the RHCII action in the Kawai ES520 is excellent for the price. While not as advanced as the RHIII or Grand Feel actions found in Kawai’s premium models, it delivers a natural, expressive playing experience that outperforms many competitors in the same price range.

Sound Quality: Harmonic Imaging XL Engine in Depth

One of the most defining features of any digital piano is its sound quality. A well-designed key action is essential for playability, but if the sounds are uninspiring, the overall playing experience will feel hollow. The Kawai ES520 uses the Harmonic Imaging XL (HI-XL) sound engine, which is a well-regarded technology found in Kawai’s mid-to-high-end digital pianos. This engine samples Kawai’s Shigeru Kawai SK-EX and Kawai EX concert grand pianos, delivering rich, detailed, and expressive piano tones.

In this section, I’ll break down the ES520’s sound quality in great detail, covering piano tones, dynamic range, sound customization, resonance effects, and other instrument voices to help you understand exactly what you’re getting with this digital piano.

Acoustic Piano Sounds: The Core of the ES520

At the heart of the ES520 are two meticulously sampled grand pianos:

1. Shigeru Kawai SK-EX – A high-end concert grand piano renowned for its warm, resonant tone.
2. Kawai EX – A brighter and more versatile concert grand.

Tone & Character

The Shigeru Kawai SK-EX sample is the highlight of the ES520. It offers a warm, rich, and expressive sound that suits classical, jazz, and cinematic playing exceptionally well.

• The low register is deep and resonant, with a full-bodied bass response that feels powerful but not overwhelming.
• The midrange is balanced and clear, making it ideal for solo playing, accompaniment, or jazz voicings.
• The high notes have a delicate, bell-like quality, with subtle overtones that add realism.

In contrast, the Kawai EX sample is brighter and more forward-sounding. This makes it well-suited for:

• Pop and rock music, where a more pronounced piano tone is needed.
• Live performances, where a brighter piano cut through the mix better.

While some digital pianos in this price range offer only one main piano tone, the ES520 gives you these two distinct choices, allowing for greater versatility depending on the style of music you play.

Dynamic Range & Expressiveness

A major strength of Kawai’s Harmonic Imaging XL technology is its wide dynamic range. This means that the piano reacts naturally to variations in playing intensity, just like an acoustic instrument.

• Soft playing produces gentle, intimate tones with subtle harmonics.
• Medium touch results in a clear, singing tone perfect for most musical styles.
• Harder playing brings out a powerful, resonant tone with greater attack and presence.

This level of expressiveness is crucial for classical and jazz pianists, who rely on nuanced control over dynamics. In comparison, some other digital pianos in this price range (such as Yamaha’s CFIIIS sample in the P-225) can sound slightly compressed, limiting the natural expressiveness of the player.

The velocity response is also adjustable via the Virtual Technician feature, allowing you to tweak how sensitive the keys are to touch. If you prefer a lighter or heavier response, you can fine-tune it accordingly.

Resonance & Acoustic Details

One of the reasons the ES520 sounds so realistic is that it models the subtle resonances and interactions that occur in an acoustic piano. These include:

✅ String Resonance – When you play certain notes together, the strings interact, creating rich harmonic overtones.
✅ Damper Resonance – When the sustain pedal is pressed, all strings resonate slightly, mimicking the behavior of a real grand piano.
✅ Key-off Simulation – When you release a key, you hear a subtle sound that replicates the felt dampers touching the strings.

These details make the ES520’s piano tones sound alive and immersive, unlike some digital pianos that feel flat and artificial. You can adjust these effects via the Virtual Technician, making it easy to find a sound that feels right for your playing style.

Other Instrument Sounds: Beyond the Grand Pianos

While the ES520 is primarily focused on its acoustic piano sounds, it also includes 34 total voices, including:

• Electric Pianos (Rhodes, Wurlitzer, FM synth sounds)
• Organs (Jazz, church, pipe organ)
• Strings & Pads
• Bass Sounds
• Harpsichords, Vibraphones, and Clavs

Electric Pianos

The Rhodes and Wurlitzer sounds on the ES520 are excellent. They have a warm, dynamic character and respond well to touch sensitivity. If you play jazz, blues, or neo-soul, you’ll appreciate how expressive these electric pianos are.

The FM electric piano (DX7-style sound) is also well done, making it great for 80s-style ballads and synth-driven music.

Organs

The jazz organ sounds are solid, with decent rotary speaker effects that can be adjusted in real-time. However, the church and pipe organs sound somewhat basic compared to specialized stage keyboards or Hammond-style clones.

Strings & Pads

These are best used for layering with piano sounds rather than as solo voices. The strings have a synthetic quality but work well for cinematic effects when paired with a grand piano.

Other Sounds

The harpsichord, vibes, and clavs are passable but not the main attraction of this instrument. If you need detailed synth sounds, orchestral instruments, or drum kits, you might want to look at a workstation keyboard instead.

Speaker System: Onkyo-Designed 40W Stereo Sound

One of the best aspects of the ES520’s sound quality is its powerful built-in speaker system. Unlike some digital pianos that rely on weak 10W or 20W speakers, the ES520 features a 40W stereo speaker setup developed in collaboration with Onkyo, a well-known Japanese audio company.

How the Speakers Perform

✅ Loud enough for home use without external amplification
✅ Bass is rich and full, not thin or weak
✅ Highs are clear and detailed without distortion
✅ Stereo field feels wide and immersive

For most home users, the built-in speakers are more than enough, making external monitors unnecessary unless you’re performing live.

Sound Customization: Virtual Technician

Kawai’s Virtual Technician feature allows you to fine-tune the piano sounds in great detail. Some of the adjustable parameters include:

• Voicing – Adjusts the overall character of the piano (brighter vs. mellower).
• Damper Noise – Controls how much mechanical noise is present when using the pedal.
• Key-off Effect – Alters how realistic the key release sounds are.
• String Resonance & Damper Resonance – Lets you fine-tune how much resonance is heard.

This level of control is rare in mid-range digital pianos and gives the ES520 an edge over competitors.

Verdict on Sound Quality

Pros:

✅ Beautiful, expressive grand piano sounds (SK-EX & EX samples)
✅ Deep, rich bass and clear high-end frequencies
✅ Excellent speaker system (40W Onkyo stereo speakers)
✅ Highly customizable with Virtual Technician
✅ Solid electric piano and organ sounds

Cons:

❌ Limited synth and orchestral sounds
❌ Church organs and strings could be more detailed

For pianists who prioritize authentic grand piano tones, the Kawai ES520 delivers one of the best sound experiences in its class. The SK-EX sample, deep customization options, and high-quality speakers make this an excellent choice for players who want a natural, immersive sound in a portable digital piano.

Speakers & Sound Projection: A Deep Dive into the ES520’s Audio System

One of the standout features of the Kawai ES520 is its powerful and well-engineered speaker system, which significantly enhances the playing experience. Many digital pianos in this price range rely on weak, underwhelming speakers that make even the best piano samples sound flat and lifeless. In contrast, Kawai has partnered with Onkyo, a highly respected Japanese audio company, to develop a speaker system that delivers rich, detailed, and immersive sound quality.

This section will analyze the speaker power, sound clarity, stereo imaging, bass response, volume capabilities, and how the ES520 performs with external amplification.

Built-in Speaker System: 40 Watts of Power

The Kawai ES520 is equipped with a dual-speaker system consisting of:

• Two full-range speakers (20W each, for a total of 40W output).
• Onkyo-developed processing and amplification for optimized sound clarity.

How Does This Compare to Other Digital Pianos?

Digital Piano	Speaker Power	Number of Speakers	Sound Quality
Kawai ES520	40W (2 x 20W)	2	Clear, rich bass and detailed highs
Yamaha P-225	14W (2 x 7W)	2	Decent but less powerful
Roland FP-60X	26W (2 x 13W)	2	Warm sound, slightly less projection
Casio PX-S3100	16W (2 x 8W)	2	Compact but less depth

At 40W, the ES520 has one of the most powerful speaker systems in its class. This means:

✅ Louder output than most competitors, making it great for home use and small performances.
✅ Richer bass response, avoiding the “thin” sound often found in weaker speaker setups.
✅ Greater depth and stereo imaging, making the piano feel more immersive when playing.

Sound Quality & Projection

A strong wattage rating isn’t everything—how the sound is processed and projected is just as important. The ES520’s Onkyo-powered sound system has been fine-tuned to ensure that the piano feels natural and three-dimensional, rather than boxed-in or artificial.

1. Clarity & Detail Across All Registers

• Bass Response: The low-end frequencies on the ES520 are deep and resonant, avoiding the “boomy” or “muddy” effect that some speakers produce. This is especially important for classical and jazz pianists, who need clarity in the left-hand register.
• Midrange: The middle octaves (where most melodies are played) are crisp and well-defined, ensuring that chords and solo lines don’t blend together unnaturally.
• Highs: The upper register has a sparkling clarity, allowing for delicate pianissimo passages to sound expressive and nuanced.

2. Stereo Imaging & Soundstage

One of the biggest complaints about budget digital pianos is that they often sound narrow and one-dimensional, as if all the sound is coming from a single speaker in front of you.

The ES520’s speaker system delivers a wide stereo field, meaning:
✅ Left-hand notes are perceived as coming from the left side of the piano, and vice versa for the right-hand notes.
✅ The sound feels like it’s “around” you rather than just in front of you, mimicking the way an acoustic piano naturally projects sound.
✅ Layered sounds (such as piano + strings) sound spacious and well-separated, rather than artificial or blended.

This makes the ES520 more immersive and expressive to play compared to digital pianos with weak stereo imaging.

Volume & Home vs. Stage Use

1. How Loud Can It Get?

For home use, the ES520’s 40W speakers provide more than enough volume to fill a living room, studio, or small venue without needing external amplification.

• At low volumes, the sound remains clear and detailed, without losing depth.
• At medium volume, it provides a rich, full-bodied sound that’s ideal for home practice and small gatherings.
• At maximum volume, the ES520 is powerful enough to be heard in a small gig setting, such as a café, church, or small recital hall.

2. Does It Distort at High Volumes?

One issue with some digital pianos is that their built-in speakers distort when pushed to higher volumes. Fortunately, the ES520’s Onkyo-powered speakers handle high volumes well, with no significant distortion or loss of clarity.

• Bass remains tight and controlled, even at louder settings.
• Treble frequencies don’t become harsh, avoiding the shrill, unpleasant quality that some digital pianos produce at max volume.
• No noticeable rattling or speaker vibration, indicating a well-constructed speaker enclosure.

However, if you are performing in a large venue or with a band, you will likely need to connect external speakers or an amplifier for greater projection.

External Amplification: Line Out & Bluetooth Audio

If you need even better sound projection, the Kawai ES520 provides multiple output options, including:

1. Stereo Line-Out (L/MONO, R)

The dedicated line-out jacks allow you to connect the ES520 to:

• External speakers for larger venues.
• An audio interface for high-quality studio recording.
• A PA system for live performances.

Many lower-end digital pianos only have a headphone jack for output, which isn’t ideal for stage use. The ES520’s dedicated line-out ports give you much cleaner and more professional sound when connected to external equipment.

2. Bluetooth Audio Output

A unique feature of the ES520 is Bluetooth Audio output, which allows you to wirelessly connect to external speakers or Bluetooth-enabled sound systems.

• Pros:
  ✅ Eliminates the need for extra cables when using Bluetooth speakers.
  ✅ Great for casual practice when playing along with backing tracks.
• Cons:
  ❌ Some latency issues (Bluetooth has slight lag, making it less ideal for live performance).

While Bluetooth audio isn’t a replacement for wired connections in professional settings, it’s a nice feature for home practice and casual use.

Final Verdict on the ES520’s Speakers & Sound Projection

Pros:

✅ 40W Onkyo-designed speaker system provides excellent clarity, bass response, and stereo imaging.
✅ Loud enough for home use, practice, and small performances without external amplification.
✅ No distortion at high volumes, with rich, natural sound.
✅ Wide stereo field makes playing feel immersive and realistic.
✅ Bluetooth Audio output allows for wireless speaker connectivity.
✅ Dedicated line-out jacks for professional audio connections.

Cons:

❌ Not powerful enough for larger venues without external amplification.
❌ Bluetooth Audio has some latency, making it unsuitable for real-time performance.

For most home users and casual gigging musicians, the Kawai ES520’s speaker system is one of the best in its class. Its power, depth, and clarity outperform many competitors, making it an excellent choice for pianists who want a natural and immersive sound without needing external speakers.

Functions & Features: A Deep Dive into the ES520’s Capabilities

The Kawai ES520 is more than just a digital piano with great sound and a realistic key action. It also comes packed with a variety of functions and features that enhance its versatility for different types of players. Whether you’re a beginner, a home pianist, a gigging musician, or someone who enjoys experimenting with sound customization, the ES520 has plenty to offer.

In this section, I’ll go in-depth on the different modes, recording capabilities, sound customization options, effects, metronome and rhythm functions, and other extra features that make the ES520 a well-rounded instrument.

1. Playing Modes: Dual, Split, and Four-Hand Mode

Dual Mode (Layering Sounds)

What it does:

• Allows you to combine two sounds together and play them simultaneously.
• For example, you can layer a grand piano with strings for a cinematic feel, or mix electric piano and pads for a rich, ambient sound.

Customization options:

• You can adjust the volume balance between the two sounds, ensuring that neither one overpowers the other.
• You can also tweak effects and tone settings separately for each layer.

Use cases:

• Ideal for ballads, film music, or solo performances where you want a fuller sound.
• Great for adding depth and warmth to your piano playing without needing external backing tracks.

Split Mode (Dividing the Keyboard into Two Sounds)

What it does:

• Divides the keyboard into two separate zones, each with a different sound.
• For example, you can play a bass sound with your left hand and a piano or organ with your right hand.

Customization options:

• You can adjust the split point (the key where the division happens).
• Each zone’s volume and effects can be adjusted separately.

Use cases:

• Perfect for jazz pianists or gigging musicians who want to play a walking bass line with their left hand while playing chords or melodies with the right.
• Useful for duo performances where a pianist wants to accompany a singer without needing a separate bassist.

Four-Hand Mode (Twin Mode for Teaching & Duets)

What it does:

• Splits the keyboard into two identical sections, so two people can play at the same time.
• Both sections have the same octave range, making it ideal for piano lessons or duet practice.

Use cases:

• Great for piano teachers and students, as it allows both to play side by side on the same instrument.
• Useful for learning duets or practicing with a partner.

2. Sound Customization & Virtual Technician

One of the best aspects of the Kawai ES520 is its Virtual Technician feature, which allows for deep sound customization. This lets you tweak the piano’s tone and response to match your personal preferences.

What Can You Customize?

🔹 Voicing – Adjusts the overall tonal character from bright to mellow.
🔹 String Resonance – Controls how much sympathetic resonance occurs when multiple keys are played.
🔹 Damper Resonance – Adjusts the natural resonance when the sustain pedal is pressed.
🔹 Key-Off Effect – Simulates the subtle sound of dampers returning to the strings when you release a key.
🔹 Hammer Delay – Alters the timing of hammer action response for a more realistic feel.
🔹 Touch Curve – Lets you adjust how the piano responds to different playing intensities.
🔹 Tuning & Temperament – Change the tuning system (useful for Baroque or historical music).

This level of sound control is rare in mid-range digital pianos and makes the ES520 a fantastic option for players who love to fine-tune their sound.

3. Recording & Playback Features

The ES520 allows you to record and playback performances, though it is somewhat limited in this area compared to workstation keyboards or high-end digital pianos.

MIDI Recording

• You can record one song at a time, but only in MIDI format (not audio).
• The MIDI recording is single-track, meaning you can’t record multiple instrument layers separately.

USB Audio Playback

• You can load and play back WAV or MP3 files from a USB flash drive.
• This is great for playing along with backing tracks or analyzing recorded performances.

Limitations:
❌ No multi-track recording or built-in multi-layer sequencing.
❌ Can’t record directly as audio (only MIDI).

For basic recording needs, the ES520 is fine, but if you need more advanced recording capabilities, you’ll need to connect it to a DAW (Digital Audio Workstation) via USB or Bluetooth MIDI.

4. Effects & Sound Processing

The ES520 includes a range of built-in effects to enhance and shape your sound.

Reverb (6 Types)

• Room
• Lounge
• Small Hall
• Concert Hall
• Live Hall
• Cathedral

These reverbs range from subtle ambiance to massive concert-hall depth, making them useful for different performance environments.

Other Effects

• Chorus (adds warmth and richness to electric pianos and pads).
• Delay (creates echo-like effects for dreamy, spacey sounds).
• Tremolo & Phaser (ideal for electric pianos and organs).
• EQ (Equalizer) – Lets you adjust bass, mid, and treble frequencies.

Customizability:

• Each effect has adjustable depth and intensity, allowing for subtle or extreme modifications.

5. Metronome & Rhythm Section

The ES520 includes a built-in metronome and a small rhythm section that provides basic drum accompaniments.

Metronome Features:

• Adjustable tempo, time signature, and volume.
• Various click sounds to suit different playing preferences.

Rhythm Section (100 Drum Patterns)

• Includes rock, jazz, Latin, pop, and classical drum beats.
• You can adjust the tempo to match your playing speed.

While it doesn’t have full auto-accompaniment features like an arranger keyboard, the rhythm section is useful for practicing with a steady beat.

6. Connectivity Options

The ES520 is highly versatile when it comes to connectivity, making it a great choice for home use, gigging, and studio recording.

Wired Connectivity:

🔹 USB to Host & USB to Device – Connects to a computer or USB flash drive for MIDI/audio file management.
🔹 Stereo Line Out (L/MONO, R) – Allows for connection to external speakers or PA systems.
🔹 Dual Headphone Jacks – Perfect for silent practice or piano lessons.

Wireless Connectivity:

🔹 Bluetooth MIDI – Lets you connect to piano learning apps, DAWs, or mobile devices wirelessly.
🔹 Bluetooth Audio – You can stream music wirelessly to the ES520’s speakers (great for playing along with songs).

Having both wired and wireless connectivity makes the ES520 an extremely flexible digital piano.

Final Verdict on Features & Functions

Pros:

✅ Dual, Split, and Four-Hand modes offer flexibility for different playing styles.
✅ Virtual Technician provides deep sound customization.
✅ USB audio playback allows for play-along practice.
✅ Multiple built-in effects (Reverb, EQ, Chorus, Delay, Phaser).
✅ Bluetooth MIDI & Audio make wireless connections easy.
✅ Rhythm section helps with timing and practice.

Cons:

❌ MIDI recording is limited to one track.
❌ No built-in multi-track sequencer.

For pianists who want both a natural playing experience and modern features, the Kawai ES520 delivers one of the best function sets in its class. Whether you’re practicing, recording, or performing, it provides a well-rounded selection of tools that enhance both learning and creativity.

Connectivity & Compatibility: The ES520’s Versatile Integration

One of the strengths of the Kawai ES520 is its comprehensive connectivity options, which make it a highly versatile digital piano for different users. Whether you’re a home player, gigging musician, or studio user, the ES520 offers a range of wired and wireless connection features that enhance both convenience and functionality.

In this section, we’ll explore the wired connectivity options (USB, audio outputs, pedal connections, MIDI, and headphone jacks), wireless features (Bluetooth MIDI & Audio), compatibility with software, and how it integrates into different musical setups.

1. Wired Connectivity: Professional-Grade I/O Options

Unlike some digital pianos that offer only basic USB or headphone connections, the Kawai ES520 provides a full set of professional I/O (input/output) ports, making it suitable for home practice, live performances, and studio recording.

USB Connectivity: MIDI and Audio

The ES520 features two USB ports:

1. USB to Host (For Computer & Mobile Device Connection)
2. USB to Device (For External Storage & File Playback)

USB to Host (MIDI & Audio Interface)

• This port allows you to connect the ES520 directly to a computer, tablet, or smartphone via a USB Type B cable.
• It transmits both MIDI and digital audio, meaning you can use the ES520 as:
  • A MIDI controller for music production software (DAWs).
  • An external sound source for recording digital piano sounds directly into a DAW.

Most mid-range digital pianos require an external audio interface to record their internal sounds, but the ES520 sends digital audio via USB—eliminating the need for extra equipment. This is a huge advantage for home recording setups.

Compatible DAWs & Apps:

• Ableton Live
• FL Studio
• Logic Pro
• GarageBand
• Cubase
• Synthesia (for learning)
• Flowkey, Simply Piano, Yousician (via MIDI)

USB to Device (File Management & Playback)

• Allows you to connect a USB flash drive and:
  • Play back MP3 or WAV audio files directly from the piano.
  • Save MIDI recordings for external storage.

This is particularly useful for practicing with backing tracks or saving performances for later review.

Line Out: Connecting to External Speakers & PA Systems

The Kawai ES520 is equipped with dedicated stereo line-out ports (L/MONO, R), which allow you to connect to:

• Powered speakers (for enhanced home sound).
• PA systems or amplifiers (for live performances).
• Studio monitors (for professional mixing and recording).

Unlike cheaper digital pianos that only have a headphone jack for external sound, the ES520’s balanced line outputs provide cleaner and more professional-quality audio output.

Balanced vs. Unbalanced Outputs:

• The ES520’s line-outs are unbalanced, which is fine for short cable runs.
• If you’re connecting to a PA system on stage, you might need a DI box to avoid unwanted noise or interference.

Headphone Jacks: Dual Outputs for Silent Practice

The ES520 features two 1/4” (6.35mm) headphone jacks, allowing for silent practice without disturbing others.

Advantages of Dual Headphone Jacks:
✅ Teacher-student practice – Both can listen at the same time.
✅ Duo performances – Two players can rehearse silently.
✅ Private lessons – Instructors can monitor a student’s playing without needing speakers.

Additionally, when headphones are plugged in, the built-in speakers automatically mute, which is a convenient feature for late-night practice.

Pedal Connectivity: Single and Triple Pedal Options

The Kawai ES520 includes:

• A standard 1/4” sustain pedal input (for the included F-10H sustain pedal).
• A dedicated connector for the optional F-302 triple pedal unit (soft, sostenuto, and sustain pedals).

Sustain Pedal Features:

• The included Kawai F-10H pedal supports half-damper functionality, allowing for nuanced pedal control.
• The optional F-302 triple pedal unit is essential for classical pianists who need full pedal functionality.

2. Wireless Connectivity: Bluetooth MIDI & Audio

One of the standout features of the Kawai ES520 is its built-in Bluetooth functionality, which allows for both MIDI and audio streaming. This eliminates the need for cables in many situations, making it a future-proof digital piano.

Bluetooth MIDI (Wireless DAW & App Integration)

• Allows you to send and receive MIDI data wirelessly to a computer, tablet, or smartphone.
• Works with music learning apps, DAWs, and notation software without requiring a physical USB connection.

Use Cases:
✅ Wireless Learning – Connects to Simply Piano, Flowkey, Yousician, etc.
✅ Wireless Recording – Sends MIDI data to GarageBand, Logic Pro, FL Studio.
✅ Sheet Music Apps – Works with ForScore, Piascore, and MobileSheets for hands-free page turning.

Bluetooth Audio (Streaming Music Through the ES520’s Speakers)

• Lets you stream music from your phone, tablet, or computer directly to the ES520’s built-in Onkyo speaker system.
• Works just like a Bluetooth speaker, making it great for playing along with songs or backing tracks.

Limitations:
❌ Bluetooth Audio has some latency, meaning it’s not ideal for real-time performance.
❌ Bluetooth MIDI may have slight delay, which can affect recording precision.

3. Compatibility with Different Musical Setups

The Kawai ES520’s connectivity options make it suitable for a wide range of playing environments.

Setup	How the ES520 Integrates
Home Use	Connect to Bluetooth audio for playing along with songs or use headphones for silent practice.
Live Performance	Use stereo line-outs to connect to a PA system or amplifier for louder sound.
Music Production	Connect via USB to Host for MIDI & Audio recording in a DAW like Logic, FL Studio, or Ableton.
Piano Lessons	Dual headphone jacks for teacher-student practice and Bluetooth MIDI for learning apps.

Because it offers both wired and wireless integration, the ES520 works well in almost any musical situation, from casual practice to professional recording.

Final Verdict on Connectivity & Compatibility

Pros:

✅ USB to Host supports MIDI and Audio, eliminating the need for an external audio interface.
✅ USB to Device allows for audio file playback and storage.
✅ Stereo Line-Outs provide clean audio output for PA systems and recording.
✅ Dual headphone jacks for silent practice.
✅ Bluetooth MIDI allows for wireless connection to apps and DAWs.
✅ Bluetooth Audio lets you stream music through the piano’s speakers.

Cons:

❌ Bluetooth Audio has latency, making it less useful for live playing.
❌ Line outputs are unbalanced, which may require a DI box for professional gigs.

For players who want a digital piano that seamlessly integrates into modern setups, the Kawai ES520 offers one of the best connectivity suites in its class. Whether you’re practicing, performing, or recording, its wired and wireless options make it one of the most flexible digital pianos on the market today.

Value for Money: Is the Kawai ES520 Worth the Price?

When considering a digital piano purchase, one of the most important factors is value for money—how well a piano’s features, quality, and performance justify its price tag. The Kawai ES520 sits in the mid-range digital piano category, typically priced between $1,200 and $1,400, depending on the region and retailer. At this price, it competes with other well-known models like the Roland FP-60X, Yamaha P-225, and Casio PX-S5000.

So, does the ES520 justify its cost? Let’s break it down.

1. What Are You Paying For?

The Kawai ES520 delivers a high level of realism, quality, and features at a price that sits above beginner models but below premium digital pianos. Here’s what your money gets you:

✅ High-Quality Sound Engine (Harmonic Imaging XL) – Features Kawai’s famous Shigeru Kawai SK-EX and Kawai EX grand piano samples, which are more detailed and realistic than many competitors.

✅ Responsive Hammer Compact II (RHCII) Key Action – A fully weighted action that feels better than Yamaha’s GHS (Graded Hammer Standard) but isn’t quite as advanced as Kawai’s RHIII or Grand Feel actions.

✅ 40W Onkyo-Designed Speaker System – More powerful and richer sounding than many other digital pianos in this price range.

✅ Bluetooth MIDI & Audio – A modern feature that allows for wireless integration with apps and external speakers.

✅ Extensive Customization with Virtual Technician – Lets you tweak the piano sound in ways that most competing models don’t.

✅ Professional Connectivity – USB audio/MIDI, stereo line-outs, dual headphone jacks, and pedal expansion options make it useful for home, stage, and studio use.

2. How Does It Compare to the Competition?

At around $1,300, the Kawai ES520 competes directly with several strong alternatives:

Model	Price Range	Key Action	Speaker Power	Sound Engine	Bluetooth
Kawai ES520	$1,200 – $1,400	RHCII	40W	Harmonic Imaging XL (SK-EX, EX grands)	✅ MIDI & Audio
Roland FP-60X	$1,200 – $1,500	PHA-4 Standard	26W	SuperNATURAL Piano	✅ MIDI & Audio
Yamaha P-225	$800 – $1,100	GHC (Graded Hammer Compact)	14W	CFX Grand Sample	✅ MIDI only
Casio PX-S5000	$1,200 – $1,400	Smart Hybrid Hammer Action	16W	AiR Sound Engine	✅ MIDI & Audio

• The Roland FP-60X has a slightly better key action (PHA-4 Standard) and SuperNATURAL sound modeling, but weaker speakers (26W vs. 40W).
• The Yamaha P-225 is cheaper, but it has a weaker key action and lower speaker power.
• The Casio PX-S5000 is very compact and has a hybrid wooden key action, but the sound system isn’t as strong as the ES520’s.

Overall Value Verdict:

• If you prioritize sound quality and speaker power, the ES520 is one of the best choices in this price range.
• If you want the absolute best key action, the Roland FP-60X might be slightly better.
• If you want a more budget-friendly option, the Yamaha P-225 offers decent quality at a lower price.

3. Who Is the ES520 Best For?

✅ Beginners & Intermediate Pianists – Offers a realistic key action and sound that’s far better than budget models, making it a long-term investment for students.

✅ Serious Home Players – The strong speakers, customization options, and quality piano samples make it one of the best digital pianos for home use.

✅ Gigging Musicians – Its lightweight build (32.4 lbs) and professional outputs make it a great choice for stage use, though it might not be as rugged as a dedicated stage piano.

✅ Music Producers & Studio Users – The USB audio/MIDI, Bluetooth MIDI, and line-outs make it a solid choice for studio work, though serious producers may prefer more advanced software pianos.

Final Verdict: Is the ES520 Worth It?

Pros (Strong Value for Price)

✅ High-quality piano sounds (SK-EX & EX grand samples).
✅ Good key action (RHCII) for its price range.
✅ Powerful 40W speaker system (better than most competitors).
✅ Bluetooth MIDI & Audio for wireless flexibility.
✅ Strong connectivity for home, stage, and studio use.

Cons (Potential Downsides)

❌ Key action is good but not the best (RHIII or PHA-4 Standard are better).
❌ Lacks multi-track recording (only single-track MIDI recording).
❌ Plastic build (not as premium-feeling as wooden-key digital pianos).

For its price, the Kawai ES520 delivers one of the best sound and speaker systems in its class, combined with solid key action and modern features. It’s a great investment for serious players who want a versatile and expressive instrument without jumping into the high-end $2,000+ price range.

Final Verdict: Should You Buy the Kawai ES520?

The Kawai ES520 is an impressive mid-range digital piano that offers realistic piano tones, a responsive key action, and a powerful speaker system. With its Harmonic Imaging XL sound engine, it faithfully reproduces the Shigeru Kawai SK-EX and Kawai EX grand pianos, making it one of the best-sounding instruments in its class. The 40W Onkyo-designed speakers provide rich bass and clear highs, ensuring an immersive playing experience.

The Responsive Hammer Compact II (RHCII) action is a solid choice, with graded weighting and a natural feel, though advanced players may prefer the RHIII or Grand Feel actions found in Kawai’s higher-end models. Its Bluetooth MIDI & Audio, USB connectivity, and professional line-outs make it a versatile instrument for home use, gigs, and recording studios.

While it lacks multi-track recording and has an all-plastic build, its sound quality, speaker system, and customization features outweigh these minor drawbacks. If you want a portable, feature-rich digital piano with excellent sound and connectivity, the Kawai ES520 is an excellent choice. It delivers strong value for money and is a great investment for serious beginners, intermediate players, and gigging musicians looking for a high-quality, versatile instrument.