KZ ES4
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At a glance
- Brand
- KZ
- Type
- Wired IEMs
- Fit
- -
- Connection
- Wired
- Noise cancelling
- No
- Released
- 2019
The KZ ES4 is a hybrid dual-driver in-ear monitor with a 10mm dynamic driver for bass and a balanced armature for mids and highs, featuring detachable cables and a plastic housing. It delivers a strong, bass-heavy sound with bright treble, typical of KZ's classic tuning.
The HearWiki takeAI-condensed
The KZ ES4 is a budget-friendly hybrid in-ear monitor that pairs a 10mm dynamic driver with a balanced armature to deliver a punchy, bass-forward sound with crisp treble. Its lightweight plastic build and detachable cable add practicality, while the wired 3.5mm connection keeps things simple for budget audiophiles.
What works
- Strong, impactful bass response
- Detachable cable for easy replacement
- Lightweight and comfortable design
- Affordable hybrid driver setup
- Bright treble adds detail
What doesn't
- No active noise cancellation
- Plastic housing may feel less premium
- Bass-heavy tuning may overwhelm some genres
- Requires a source with enough power for best performance
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
Specifications
| Driver | 1DD + 1BA hybrid |
|---|---|
| Driver type | hybrid |
| Driver configuration | 1DD + 1BA |
| Drivers per side | 2 |
| Frequency response | 20 Hz - 40 kHz |
| Impedance | 25 Ω |
| Sensitivity | 104 dB/mW |
Audio
| Driver | 1DD + 1BA hybrid |
|---|---|
| Driver type | hybrid |
| Driver configuration | 1DD + 1BA |
| Drivers per side | 2 |
| Frequency response | 20 Hz - 40 kHz |
| Impedance | 25 Ω |
| Sensitivity | 104 dB/mW |
Features
| Active noise cancelling | No |
|---|
Design
| Weight | 20 g |
|---|---|
| Detachable cable | Yes |
| Connector | 3.5 mm |
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