Wired IEMs
KZ ES4
Not yet scored
$10
Full review dataKZ ES4 vs Moondrop JIU: which should you buy?
Specs, scores and condensed review verdicts for the KZ ES4 vs Moondrop JIU, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.
Wired IEMs
Moondrop JIU
74Good
$19
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
KZ ES4
No sub-scores yet - not enough rated reviews.
Moondrop JIU
Sound7.5
Value8.0
Specifications
| Spec | KZ ES4 | Moondrop JIU |
|---|---|---|
| Type | Wired IEMs | Wired IEMs |
| Price (USD) | $10 | $19 |
| HearWiki score | Not scored | 74 / 100 · Good |
| Released | 2019 | 2023 |
| Audio | ||
| Driver | 1 balanced armature + 10mm dynamic driver | 10mm High-performance Dynamic Driver |
| Driver size | 10 mm | 10 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 20-40,000Hz | 10Hz-35kHz |
| Impedance | 25 Ω | 32 Ω |
| Sensitivity | 104 dB/mW | 110 dB/mW |
| Wireless | ||
| Bluetooth | none | - |
| Multipoint pairing | No | No |
| Features | ||
| Active noise cancelling | - | No |
| Design | ||
| Weight | 20 g | - |
| Detachable cable | Yes | No |
| USB-C | - | Yes |
| Calls | ||
| Microphones | - | 1 |
| Call noise reduction | - | DSP microphone |
What reviewers said
KZ ES4
The KZ ES4 is an affordable hybrid in-ear monitor that pairs a 10mm dynamic driver for low-end punch with a balanced armature for detailed upper frequencies. Its sound signature leans heavily toward bass emphasis with a crisp, forward treble, all housed in a lightweight plastic shell with replaceable cables. While it offers impressive clarity for the price, the tuning may feel overly aggressive to those seeking a neutral response.
- Pro:Strong, impactful bass for the price
- Pro:Clear and detailed treble presentation
- Pro:Detachable cable allows easy upgrades
- Con:Bass can overpower midrange at times
- Con:Treble may be harsh for sensitive listeners
- Con:Plastic build feels less premium
Moondrop JIU
The Moondrop JIU is an affordable wired USB-C earphone that delivers surprisingly polished sound for its price, with a well-tuned dynamic driver and a DSP microphone for calls. It's a sensible pick for casual listeners who value simplicity, though its non-detachable cable and occasionally bright treble may deter some. Overall, it offers solid value within the still-narrow field of DSP-equipped budget IEMs.
- Pro:Excellent tuning for the price
- Pro:Good technical performance for a budget model
- Pro:USB-C connectivity with DSP mic for clear calls
- Con:Treble can be overly bright for some
- Con:Fixed cable cannot be replaced
- Con:Not an elite technical performer
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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