Wired IEMs
KZ Zenith
82Great
$47
Full review dataKZ Zenith vs Sennheiser CX 100: which should you buy?
On aggregated review scores the KZ Zenith comes out ahead with an HearWiki score of 82. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: KZ Zenith - Great overall at around $47.
Wired IEMs
Sennheiser CX 100
72Good
$30
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
KZ Zenith
Sound8.5
Value8.0
Sennheiser CX 100
Sound7.5
Value8.0
Specifications
| Spec | KZ Zenith | Sennheiser CX 100 |
|---|---|---|
| Type | Wired IEMs | Wired IEMs |
| Price (USD) | $47 | $30 |
| HearWiki score | 82 / 100 · Great | 72 / 100 · Good |
| Released | 2024 | 2014 |
| Audio | ||
| Driver | Full-range ultra-linear Dynamic Driver X | Dynamic |
| Driver size | 10 mm | - |
| Drivers per side | 1 | 1 |
| Frequency response | 20Hz-40kHz | 17Hz-21kHz |
| Impedance | 41 Ω | 28 Ω |
| Sensitivity | 128 dB/mW | 119 dB/mW |
| Wireless | ||
| Multipoint pairing | - | No |
| Battery | ||
| Wireless charging | - | No |
| Features | ||
| Active noise cancelling | - | No |
| ANC type | - | none |
| Transparency mode | - | No |
| Companion app | - | No |
| Custom EQ | - | No |
| Wear detection | - | No |
| Controls | none | none |
| Design | ||
| Weight | - | 10 g |
| Detachable cable | Yes | No |
| USB-C | No | No |
What reviewers said
KZ Zenith
The KZ Zenith is a wired, single-dynamic-driver IEM that delivers a balanced, non-fatiguing sound with punchy bass, detailed mids, and smooth treble. It's highly sensitive and easy to drive, making it a versatile choice for portable use, while its build quality and fit are praised. Despite a few minor caveats, it offers strong technical performance and competes well above its modest price point.
- Pro:Balanced, non-offensive tuning with textured bass
- Pro:Clear and detailed mids with refined treble
- Pro:Very easy to drive and highly sensitive
- Con:No active noise cancellation or controls
- Con:Cable is detachable but not USB-C
- Con:Minor caveats in overall technical refinement
Sennheiser CX 100
The Sennheiser CX 100 is a budget-friendly wired earphone that delivers a well-balanced, detailed sound with comfortable fit and good passive isolation. However, it lacks modern conveniences like an inline remote, microphone, or detachable cable, and its basic accessories and fiddly positioning may frustrate some users.
- Pro:Clear, balanced sound with good bass detail
- Pro:Very comfortable for extended wear
- Pro:Strong passive noise isolation
- Con:No inline remote or microphone
- Con:Basic accessory package
- Con:Ear tips can be tricky to position correctly
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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