Image © KZPricey for what it is
The KZ ESX is a 10th Anniversary Special Edition dynamic earphone featuring a 12mm super dynamic unit with a 5-micron liquid crystal diaphragm, alloy crack-shaped front cover, and 2Pin detachable cable.
The KZ ESX is a budget wired IEM built around a single 12mm dynamic driver, offering a straightforward, no-frills listening experience with a detachable cable and inline controls. It prioritizes affordability and solid construction over audiophile-grade refinement, making it a practical choice for casual listeners. While it can sound congested with complex tracks, it delivers acceptable performance for its modest price point.
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
| Driver | 12 mm dynamic |
|---|---|
| Driver type | dynamic |
| Driver size | 12 mm |
| Drivers per side | 1 |
| Frequency response | 20 Hz - 40 kHz |
| Impedance | 22 Ω |
| Sensitivity | 111.6 dB/mW |
| Driver | 12 mm dynamic |
|---|---|
| Driver type | dynamic |
| Driver size | 12 mm |
| Drivers per side | 1 |
| Frequency response | 20 Hz - 40 kHz |
| Impedance | 22 Ω |
| Sensitivity | 111.6 dB/mW |
| Active noise cancelling | No |
|---|---|
| Controls | buttons |
| Detachable cable | Yes |
|---|---|
| USB-C | No |
| Connector | 3.5 mm |
3 source(s) feeding this product's score.
Video reviews we found, each condensed to its verdict. They do feed the HearWiki score, at a measured weight below what a published written review carries.
Reviewers largely agree the KZ ESX offers a balanced, relaxed sound with smooth treble, good bass texture, and impressive staging for its price, making it a solid budget pick.
26:03The reviewer finds the KZ ESX to be a technically impressive IEM with a very wide and deep soundstage, excellent imaging, and good detail retrieval. The sound signature is a mild V-shape with impactful, fast bass and clear, forward instruments, though male vocals lack some warmth and grit. The main drawbacks are the fit, which can be unstable due to the long nozzle, and the overall neutral-leaning tone that may not suit those who prefer a warmer sound.
10:19The reviewer finds the KZ ESX to be a pleasant surprise, offering a warm, balanced sound with good bass, clear mids, and smooth treble, all in a comfortable and attractive design. It's positioned as an easy recommendation for beginners or those wanting a relaxed, musical listen, especially given its low price.
10:56The reviewer finds the KZ ESX to be one of the best recent KZ models, praising its smooth treble, good bass texture, and overall balanced tuning. They recommend it over the EDX Ultra and CRA Plus, noting it's likely more affordable and performs well across genres.
23:32The reviewer finds the KZ ESX to be a solid, relaxed-sounding budget IEM that fixes several issues from previous KZ models, particularly in the treble and timbre. It has a bassy but reasonable V-shaped signature with good staging and separation for the price, though the elevated bass can hide some technicalities. The main criticism is the overwhelming number of similar KZ releases, making it hard to recommend this over others.
19:57The reviewer finds the KZ ESX to be a large, well-built IEM with decent fit and isolation, but considers its sound signature too dark and muffled due to excessive bass and recessed treble. It is not an improvement over the KZ EDA, CRA+, or EDX Ultra, and the reviewer recommends those alternatives instead.
Summaries are AI condensations of each video's own conclusion, not transcripts. Titles, thumbnails and view counts belong to their channels.
A minute of your experience with the KZ ESX helps the next person shopping for them.
Other wired iems models at a comparable price, ordered by HearWiki score.
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The data-driven guides this model qualifies for.
