Image © TRNPoor value
TRN CS4 is a wired in-ear monitor featuring a 10mm dual-magnet dynamic driver with a silicon-crystal composite bio-cellulose diaphragm, offering a balanced, pop-oriented sound signature with ergonomic design and replaceable cable.
The TRN CS4 is a very affordable wired IEM built around a single 10mm dynamic driver. It delivers energetic treble and respectable detail for the price, though its stock tuning can come across as sharp; with some tweaks, it offers surprisingly good imaging and soundstage for a budget model. A lightweight, detachable-cable design adds value at this low cost.
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
| Driver | 10 mm dynamic |
|---|---|
| Driver type | dynamic |
| Driver size | 10 mm |
| Drivers per side | 1 |
| Frequency response | 20 Hz - 20 kHz |
| Impedance | 23 Ω |
| Sensitivity | 118 dB/mW |
| Driver | 10 mm dynamic |
|---|---|
| Driver type | dynamic |
| Driver size | 10 mm |
| Drivers per side | 1 |
| Frequency response | 20 Hz - 20 kHz |
| Impedance | 23 Ω |
| Sensitivity | 118 dB/mW |
| Active noise cancelling | No |
|---|
| Weight | 4.2 g |
|---|---|
| Detachable cable | Yes |
| USB-C | Yes |
| Connector | 2-pin 0.78 mm |
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2 source(s) feeding this product's score.
Video reviews we found, each condensed to its verdict. They do feed the HearWiki score, at a measured weight below what a published written review carries.
Reviewers agree the TRN CS4 is an extremely affordable IEM with a surprisingly good soundstage and clean treble for its price, but they find its overall sound thin and lacking in bass punch and dynamics.
5:00The reviewer finds the TRN CS4 to be a very budget-friendly IEM with a thin and uninspiring sound signature, lacking bass punch and dynamic range, though it has a surprisingly good soundstage for the price. They recommend it only for those with a strict $10 budget, but suggest spending a bit more on alternatives like the Moondrop Chu for significantly better performance.
3:28The reviewer finds the TRN CS4 inconsistent, with more negatives than positives. It has excellent fit and clean treble, but the cable quality is poor, the included eartips are inconsistent, and the bass is lacking compared to peers. The reviewer suggests it is only worth the price of cheaper models like the DX Pro or DX Pro X.
Summaries are AI condensations of each video's own conclusion, not transcripts. Titles, thumbnails and view counts belong to their channels.
A minute of your experience with the TRN CS4 helps the next person shopping for them.
Other wired iems models at a comparable price, ordered by HearWiki score.
Other TRN models in the database, same category first.
The data-driven guides this model qualifies for.
