Short answer: the KiiBoom Allure. It ranks #610 of 1291 in-ear headphones by sound quality, rated 3.8/5, at $99.99; the EUIU UI-05 ranks #659, rated 3.7/5, at $99. With prices this close, go by the sound-quality ranking rather than the cost.
The case for the KiiBoom Allure: A broadly balanced tuning with a preference score of 71 against the Harman target. Watch for: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
What the EUIU UI-05 does well: A hybrid with coaxial 10mm and 6mm dynamic drivers plus three balanced armatures. The tradeoff: Treble sits about 3.6 dB below target, a dark, relaxed balance.
Buy the KiiBoom Allure. It is rated higher for sound quality, and the $0.99 saving on the EUIU UI-05 is not enough to make up the difference.
Still deciding? The full Headphones rankings cover every ranked option.
A broadly balanced tuning with a preference score of 71 against the Harman target.
Amazon $99.99 eBay
A hybrid with coaxial 10mm and 6mm dynamic drivers plus three balanced armatures.
Amazon $99.00 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| KiiBoom Allure | EUIU UI-05 | |
|---|---|---|
| Price | $99.99 | $99.00 |
| Ranked | #610 of 1291 in In-Ear Headphones | #659 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 71 (median of 7 squig.link measurements, calibrated to AutoEQ) | 70 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.11 dB standard deviation | 2.24 dB standard deviation |
| Tonal Tilt | -0.47 (negative is warmer, positive brighter) | -0.56 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x 10mm dynamic | 2 x coaxial dynamic + 3 x balanced armature |
| Impedance | - | 17 ohms |
| Sensitivity | - | 106 dB |
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 KiiBoom Allure from cqtek, harpo, hore, ianfann, pw, soundcheck39 and vortexreviews; the EUIU UI-05 from audioamigo, bassaudio, faxepremium, fernandagunsan, kuping-sensi and soundcheck39, all via squig.link.
Related Headphone Comparisons
More top alternatives to KiiBoom Allure: