Short answer: the TForce Yuanli. It ranks #261 of 1291 in-ear headphones by sound quality, rated 4.2/5, at $22.99; the TINHIFI C0 ranks #362, rated 4.1/5, and costs $23.90, so there is not much of a tradeoff to weigh.
What the TForce Yuanli does well: The median of 7 hobbyist measurements gives it a very good Harman preference score of 76 with a 1.78 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. The tradeoff: Treble sits about 3.5 dB low, so it sounds a little dark.
The case for the TINHIFI C0: A broadly balanced tuning with a preference score of 75 against the Harman target. Watch for: About 3 dB less bass than the Harman target below 150 Hz, which can sound thin on pop, hip hop and electronic music.
Buy the TForce Yuanli. It is rated higher for sound quality than the TINHIFI C0 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.
The median of 7 hobbyist measurements gives it a very good Harman preference score of 76 with a 1.78 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural.
Amazon $22.99 eBay
A broadly balanced tuning with a preference score of 75 against the Harman target.
Amazon $23.90 eBayPrices on this page were last checked October 16, 2026 at 5:46 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
| TForce Yuanli | TINHIFI C0 | |
|---|---|---|
| Price | $22.99 | $23.90 |
| Ranked | #261 of 1291 in In-Ear Headphones | #362 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 76 (median of 7 squig.link measurements, calibrated to AutoEQ) | 75 (median of 8 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.78 dB standard deviation | 1.95 dB standard deviation |
| Tonal Tilt | -0.45 (negative is warmer, positive brighter) | +0.42 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-4.7 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 32 ohms | 32 ohms |
| Sensitivity | 103.5 dB | 105 dB |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
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 TForce Yuanli from achoreviews, aftersound, bryaudioreviews, harpo, lown-fi, recode and rg; the TINHIFI C0 from achoreviews, ankramutt, dvewlsh, practiphile, soundcheck39, superreview, tonedeafmonk and yoshiultra, all via squig.link.
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