Wired IEMs
KZ Castor
72Good
$15
Full review dataKZ Castor vs TRN Earphone 2: 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 Earphone 2
62Average
$8
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 Earphone 2
Sound6.0
Value7.0
Specifications
| Spec | KZ Castor | TRN Earphone 2 |
|---|---|---|
| Type | Wired IEMs | Wired IEMs |
| Price (USD) | $15 | $8 |
| HearWiki score | 72 / 100 · Good | 62 / 100 · Average |
| Released | 2023 | 2018 |
| Audio | ||
| Driver | Dual dynamic drivers (8mm + 10mm dual magnetic) | 14.2mm PET composite diaphragm dynamic |
| Driver size | 10 mm | 10 mm |
| Drivers per side | 2 | 2 |
| Frequency response | 20Hz-40kHz | 20Hz-20000Hz |
| Impedance | 31 Ω | 32 Ω |
| Sensitivity | 105 dB/mW | 107 dB/mW |
| Wireless | ||
| Bluetooth | none | - |
| Multipoint pairing | No | - |
| Battery | ||
| Wireless charging | No | - |
| Features | ||
| Active noise cancelling | No | - |
| ANC type | none | - |
| Transparency mode | No | - |
| Companion app | No | - |
| Custom EQ | Yes | - |
| Wear detection | No | - |
| Controls | none | buttons |
| Design | ||
| Weight | - | 18 g |
| Water resistance | - | IPX4 |
| Detachable cable | Yes | Yes |
| USB-C | No | No |
| Model code | - | TRN EMA |
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 Earphone 2
This budget-friendly in-ear offers a dual-driver setup with a PET composite dynamic unit, delivering punchy bass and clear mids for its price. It's lightweight, comfortable for extended wear, and comes with a detachable cable and IPX4 sweat resistance, though the treble can come across as a bit sharp. Overall, it's a solid value pick for listeners who prioritize bass and soundstage over refinement.
- Pro:Strong bass definition and clarity in mids
- Pro:Lightweight and comfortable for long sessions
- Pro:Detachable cable and IPX4 rating add durability
- Con:Treble can sound harsh or aggressive
- Con:Basic accessory kit with limited tips
- Con:Cable noise may be noticeable during use
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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