Wired IEMs
KZ Castor
72Good
$15
Full review dataKZ Castor vs TRN CS2: which should you buy?
On aggregated review scores the KZ Castor comes out ahead with an HearWiki score of 72. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: KZ Castor - Good overall at around $15.
Wired IEMs
TRN CS2
68Good
$9
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
KZ Castor
Sound7.0
Value8.0
TRN CS2
Sound6.5
Value8.0
Specifications
| Spec | KZ Castor | TRN CS2 |
|---|---|---|
| Type | Wired IEMs | Wired IEMs |
| Price (USD) | $15 | $9 |
| HearWiki score | 72 / 100 · Good | 68 / 100 · Good |
| Released | 2023 | 2020 |
| Audio | ||
| Driver | Dual dynamic drivers (8mm + 10mm dual magnetic) | dynamic |
| Driver size | 10 mm | 10 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 20Hz-40kHz | 20Hz-20kHz |
| Impedance | 31 Ω | 22 Ω |
| Sensitivity | 105 dB/mW | 118 dB/mW |
| Wireless | ||
| Bluetooth | none | none |
| Multipoint pairing | No | No |
| Battery | ||
| Wireless charging | No | - |
| Features | ||
| Active noise cancelling | No | No |
| ANC type | none | - |
| Transparency mode | No | - |
| Companion app | No | - |
| Custom EQ | Yes | - |
| Wear detection | No | - |
| Controls | none | buttons |
| Design | ||
| Weight | - | 21 g |
| Detachable cable | Yes | - |
| USB-C | No | - |
What reviewers said
KZ Castor
The KZ Castor is a budget-friendly in-ear monitor with dual dynamic drivers and adjustable tuning switches, offering a fun, energetic sound that punches above its price. It's particularly well-suited for bass lovers and gamers, though its technical performance and accessory package are only average for the price.
- Pro:Adjustable tuning switches for sound customization
- Pro:Strong bass response and energetic sound signature
- Pro:Good build quality and comfortable fit for the price
- Con:Average technical performance and detail retrieval
- Con:Stock cable and accessories feel cheap
- Con:Slight treble sibilance and artificial vocals at times
TRN CS2
The TRN CS2 is a very affordable single-dynamic-driver wired earphone that punches above its price with a balanced, lively sound signature and a sturdy build. Its lightweight, colorful shell and straightforward controls make it a practical, entry-level pick for budget-conscious listeners who want a no-fuss daily driver.
- Pro:Excellent value for the price
- Pro:Balanced and easy-going sound
- Pro:Lightweight and durable construction
- Con:Limited accessory package
- Con:No detachable cable
- Con:Treble can be slightly rolled off for some listeners
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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