Short answer: the Tripowin x 0diBi Vivace. It ranks #535 of 1291 in-ear headphones by sound quality, rated 3.9/5, at $29.90; the EUIU EI-01 ranks #599, rated 3.8/5, at $29. With prices this close, go by the sound-quality ranking rather than the cost.
Why pick the Tripowin x 0diBi Vivace: A very cheap single dynamic IEM tuned with 0diBi. Watch for: A 1.88 dB spread from the target still leaves some peaks and dips.
The case for the EUIU EI-01: A cheap single dynamic IEM with a titanium composite diaphragm. The catch: Treble sits about 3.1 dB below target, a dark, relaxed balance.
Buy the Tripowin x 0diBi Vivace. It is rated higher for sound quality, and the $0.90 saving on the EUIU EI-01 is not enough to make up the difference.
Looking for alternatives? See the complete Headphones rankings.
A very cheap single dynamic IEM tuned with 0diBi.
Amazon $29.90 eBay
A cheap single dynamic IEM with a titanium composite diaphragm.
Linsoul $29.00 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
| Tripowin x 0diBi Vivace | EUIU EI-01 | |
|---|---|---|
| Price | $29.90 | $29.00 |
| Ranked | #535 of 1291 in In-Ear Headphones | #599 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 18 ohms | 32 ohms |
| Sensitivity | 106 dB | 109 dB/mW |
| Harman Preference Score | 72 (median of 12 squig.link measurements, calibrated to AutoEQ) | 71 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.88 dB standard deviation | 2.08 dB standard deviation |
| Tonal Tilt | -0.71 (negative is warmer, positive brighter) | -0.74 (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 (+1.6 dB at 30 Hz) |
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 Tripowin x 0diBi Vivace from atechreviews, audioamigo, cqtek, dl, elrics, jacstone, lumerion, pw, silicagel, soundcheck39, superreview and vortexreviews; the EUIU EI-01 from bassaudio, fernandagunsan, kuping-sensi, soundcheck39, soundignity and tdl, all via squig.link.
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