Wired IEMs
KZ Zenith
82Great
$47
Full review dataKZ Zenith vs Soundcore Space A40: 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.
True Wireless
Soundcore Space A40
78Great
$41
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
Soundcore Space A40
Sound7.5
Noise cancelling8.5
Battery7.0
Calls7.0
Value8.0
Specifications
| Spec | KZ Zenith | Soundcore Space A40 |
|---|---|---|
| Type | Wired IEMs | True Wireless |
| Price (USD) | $47 | $41 |
| HearWiki score | 82 / 100 · Great | 78 / 100 · Great |
| Released | 2024 | 2022 |
| Audio | ||
| Driver | Full-range ultra-linear Dynamic Driver X | dynamic |
| Driver size | 10 mm | 10 mm |
| Drivers per side | 1 | 2 |
| Frequency response | 20Hz-40kHz | - |
| Impedance | 41 Ω | 16 Ω |
| Sensitivity | 128 dB/mW | - |
| Wireless | ||
| Bluetooth | - | 5.2 |
| Bluetooth version | - | 5.2 |
| Codecs | - | SBC, AAC, LDAC |
| Multipoint pairing | - | Yes |
| Wireless range | - | 10 m |
| Battery | ||
| Battery life | - | 10 h |
| Battery life (ANC on) | - | 8 h |
| Battery incl. case | - | 50 h |
| Quick charge | - | 10 min = 4 h |
| Wireless charging | - | Yes |
| Features | ||
| Active noise cancelling | - | Yes |
| ANC type | - | adaptive |
| Transparency mode | - | Yes |
| Custom EQ | - | Yes |
| Wear detection | - | No |
| Controls | none | touch |
| Design | ||
| Weight | - | 4.9 g |
| Case weight | - | 48.4 g |
| Water resistance | - | IPX4 |
| Detachable cable | Yes | - |
| USB-C | No | Yes |
| Calls | ||
| Microphones | - | 6 |
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
Soundcore Space A40
The Soundcore Space A40 earbuds deliver a well-rounded budget experience, combining effective adaptive noise cancellation, balanced audio, and long battery life with multipoint connectivity. They offer strong value at around $100, with a comfortable fit and support for LDAC, though a few ergonomic and performance quirks keep them from being flawless.
- Pro:Effective adaptive ANC for the price
- Pro:Balanced, pleasant sound with LDAC support
- Pro:Long battery life with wireless charging case
- Con:Microphone quality is mediocre
- Con:Touch controls can be inconsistent
- Con:Case hinge feels less sturdy
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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