KZ ES4

$20.89 Price Tier: Budget

5.0 (2)

3 Critic Reviews

1 Review

0 wishlisted

2 saved

Page last updated Feb 24, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated February 24, 2026.

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Reviews

Price

4.5 (1246)

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Average Price: $21

Budget/Beginner

$100

$301+

Price Tier

In the Headphones & In-Ear Monitors category, KZ ES4 is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

Budget

Standard

High-end

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Description

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Discover the KZ ES4, an in-ear monitor that combines form and function to provide an impressive auditory experience for musicians and audiophiles alike. Engineered with a hybrid dual-driver system, the KZ ES4 delivers clear highs and rich lows, ensuring a balanced sound profile across all genres. The ergonomic design ensures a comfortable fit for prolonged use, making it ideal for extended studio sessions or live performances.

The KZ ES4 is crafted with transparency in mind, allowing users to appreciate the intricate details of their music. Its dual-driver setup features both a balanced armature and a dynamic driver, working in tandem to produce crisp sound clarity and powerful bass. The detachable cable design not only enhances durability but also allows for easy replacement or upgrades, adding to the product’s longevity.

These in-ear monitors are an excellent choice for musicians looking to elevate their practice sessions or gigs with reliable and high-quality audio. Whether you're rehearsing, performing, or simply enjoying your favorite tracks, the KZ ES4 brings music to life with precision and depth.

Key Features:

Hybrid dual-driver system: Combines a balanced armature and dynamic driver for a comprehensive sound experience.
Ergonomic design for comfortable long-term use.
Detachable cables for easy maintenance and upgrades.
Transparent sound profile with clear highs and rich lows.
Ideal for both studio work and live performances.

Videos

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Super* Review

KZ ES4 Super Review - vs. ZSA and ZS10

Super* Review

KZ ES4 Dual Driver IEMs Review: Earbuds sound way better than $20

JuanBagnell

KZ ES4 / BEST EVER KZ?

CallaghanReviews

KZ ES4 - As Good As Dankpods Says? - Unboxing and First Impressions

Cam't

KZ ES4 Review $18

TechManZ

KZ ES4 Review VS KZ ZSA VS KZ ZS6 & ZS10

donmarkon

KZ ES4 Review 🔥 Daily Driver Material?

zpolt

*NEW* KZ ES4 IN EARS REVIEW! - Another Winner!!

Rob Brown

KZ ES4 REVIEW: A RETURN TO REGULAR ROTATION

Chi-Fi Reviews

Reviews

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PROS

Exceptional sound quality, especially for the price range
Comfortable, secure fit with memory metal hook-over-ear design
Lightweight yet durable construction
Great value, offering professional-quality sound under $50
Braided, lengthy cord with right-angle jack enhances durability
Bendable wire allows for personalized fit
Two-pin disconnect feature adds versatility and ease of cable replacement
No static or negative feedback during use
Suitable for various audio devices without fitment issues
Appreciated by both casual listeners and audiophiles

CONS

Requires a custom storage solution for optimal protection
Some users initially perceive bass as underpowered due to prior expectations

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about KZ ES4.

Build quality

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Noted for a weird, uncomfortable shape but stays in better than certain models like the Arias; nozzle BA only handles highest frequencies, affecting control in complex passages.
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Comparisons

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While the KZ ES4 smashes Raycon E25 TWS according to some, the CCA CRA exceeds both ES4 and ZSN Pro X in performance and price efficiency.
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0 0

Moondrop Quarks and Blon BL03 are recommended over KZ ES4 for better sound quality at a similar price point.
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Mods and upgrades

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Owners suggest upgrading to the new thick KZ copper cable and using preferred tips for better performance.
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FiiO UTWS5 Bluetooth earhooks convert the KZ ES4 to Bluetooth, enhancing versatility with a powerful 10-band equalizer included in the FiiO app.
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Use cases and applications

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Reportedly better for hip hop and pop songs without EQ, but lacks versatility for other genres without adjustments.
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User experience

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Some users find them acceptable for gaming and casual PC use, but not favored for music listening without EQ.
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0 0

Some users report excessively bassy and bloated sound from KZ ES4, recommending EQ to balance.
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0 0

Users find the KZ ES4 to be an unbelievable upgrade from AirPods, noting improved clarity with an upgraded cable.
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Features and functionality

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KZ ES4 is highly responsive to EQ adjustments, enhancing its sound profile for different preferences.
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0 0

The KZ ES4 can sound erroneously sibilant and thin when EQ changes are applied based solely on a graph without fine-tuning by ear.
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Value and pricing

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KZ ES4 appeals to budget audiophiles due to its affordability, similar to how Venture Electronics markets the $5 Monks.
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Software and compatibility

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Recommended equalizer apps have at least 10 bands of graphic EQ with adjustable Q factor for precise frequency adjustments on iPhones.
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Setup and maintenance

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Negative pre-amp gain is crucial to prevent clipping when boosting frequencies, ensuring clear sound without distortion.
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Using a tone generator from 20Hz to 20,000Hz helps identify discrepancies between unit sound and frequency response graphs for effective EQ adjustments.
Source

Critic Reviews

KZ ES4 | Audiofool Reviews

audiofool.reviews

The KZ ES4 offers a lively listening experience with impressive bass and improved mids, making it a solid choice for casual listeners. However, it’s not without flaws; some users may find the fit a bit large, and the sound can be overly colored for those seeking neutrality. While the build quality and packaging meet expectations, the cable's short strain reliefs detract from an otherwise decent upgrade. For fans of bass-heavy sound signatures, the ES4 could be a winner, but it may leave those looking for detail and balance wanting more.

neutral

Full Review

KZ ES4 review: balanced, but not enough - Soundphile Review

soundphilereview.com

The KZ ES4 offers a commendable blend of comfort and affordability, making it a solid choice for budget-conscious audiophiles. Its balanced sound signature is a step up from KZ's previous models, yet it still suffers from noticeable issues like a peaky upper midrange that can fatigue listeners with certain tracks. While the design is sleek and the removable cable is a plus, the overall build quality feels standard. Sound-wise, it excels with classic rock but lacks the detail and separation found in higher-end options. Essentially, the ES4 is a decent entry point, but it doesn't quite fulfill its potential—making it a worthwhile listen for some, but a miss for others seeking true fidelity.

neutral

Full Review

KZ ES4 review on thephonograph.net

thephonograph.net

The KZ ES4 delivers an exhilarating listening experience with its punchy bass, vibrant mids, and bright highs, all at an impressively affordable price. It boasts excellent comfort and design, making it a pleasure to wear for extended sessions. However, some tracks may reveal harsh peaks, and the accessories offered are minimal. Overall, the ES4 is a fantastic choice for bass enthusiasts and KZ fans alike, but be prepared to tweak the EQ to achieve your ideal sound.

positive

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5.0 out of 5

Based on 1 Review and 2 Ratings

5 star

4 star

3 star

2 star

1 star

shingojikung

125

over 1 year ago

very good and very cheap

my first iem ever though later on the company is reveal to be a Fraud the sound is full with bass in the acoustic sense, good for main vocal use in rock song on mid size stage

Roles:

Singer Guitarist Keyboardist

Genres:

Rock Pop Orchestra