Short answer: the TRN V10 PRO. It ranks #1006 of 1369 in-ear headphones by sound quality, rated 3.2/5, at $14.99; the KBEAR KS1 ranks #1090, rated 2.9/5, and costs $17.09, which makes this an easy call rather than a real tradeoff.
The TRN V10 PRO is the better-sounding choice. A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap. Watch for: Treble about 3 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
The case for the KBEAR KS1: Bass is lifted about 4.9 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. The tradeoff: An 8.2 dB peak near 7.9 kHz can make cymbals and sibilance sound sharp.
Buy the TRN V10 PRO. It is rated higher for sound quality than the KBEAR KS1 and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Headphones rankings cover every ranked option.
A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
Shenzhenaudio $14.99 eBay
Bass is lifted about 4.9 dB with extension to 20 Hz, giving kick drums and bass lines extra weight.
Amazon $17.09 eBayPrices on this page were last checked October 17, 2026 at 6:04 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| TRN V10 PRO | KBEAR KS1 | |
|---|---|---|
| Price | $14.99 | $17.09 |
| Ranked | #1006 of 1369 in In-Ear Headphones | #1090 of 1369 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 64 (median of 3 squig.link measurements, calibrated to AutoEQ) | 61 (median of 12 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.64 dB standard deviation | 2.92 dB standard deviation |
| Tonal Tilt | -0.69 (negative is warmer, positive brighter) | -0.59 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.1 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid | Dynamic |
| Drivers | 2 DD + 2 BA (1 x 10mm beryllium-plated dynamic driver, 1 x 6mm titanium-plated dynamic driver, 2 x 30095 balanced armatures) | 1 x 10mm dynamic |
| Impedance | 22 ohms | 16 ohms |
| Sensitivity | 112 dB | 109 dB/mW |
| Frequency Response | 20Hz - 20kHz | 20Hz - 20kHz |
| Weight | 0 lbs (4.6 g) (per earbud) | - |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the TRN V10 PRO from eplv, obodio and tonedeafmonk; the KBEAR KS1 from aftersound, audioamigo, dchpgall, eplv, hbb, hu-fi, ianfann, jacstone, practiphile, pw, regancipher and vortexreviews, all via squig.link.
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