Short answer: the Kinera Celest Plutus Beast. Both are rated 3.7/5 for sound quality (#648 and #659 of 1291 in-ear headphones), and the Kinera Celest Plutus Beast costs $89 against $99 for the EUIU UI-05, so with nothing between them on sound quality, price settles it.
Why pick the EUIU UI-05: 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.
Why pick the Kinera Celest Plutus Beast: The median of 11 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.31 dB spread. Watch for: A 4.6 dB peak near 2.0 kHz can make cymbals and sibilance sound sharp.
Buy the Kinera Celest Plutus Beast. Both are rated the same for sound quality, and it costs $10 less than the EUIU UI-05.
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A hybrid with coaxial 10mm and 6mm dynamic drivers plus three balanced armatures.
Amazon $99.00 eBay
The median of 11 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.31 dB spread.
Amazon $89.00 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
| EUIU UI-05 | Kinera Celest Plutus Beast | |
|---|---|---|
| Price | $99.00 | $89.00 |
| Ranked | #659 of 1291 in In-Ear Headphones | #648 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Hybrid | Tribrid |
| Drivers | 2 x coaxial dynamic + 3 x balanced armature | 1 x 10mm planar + 1 x bone conduction + 1 x balanced armature |
| Impedance | 17 ohms | 8 ohms |
| Sensitivity | 106 dB | - |
| Harman Preference Score | 70 (median of 6 squig.link measurements, calibrated to AutoEQ) | 70 (median of 11 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.24 dB standard deviation | 2.31 dB standard deviation |
| Tonal Tilt | -0.56 (negative is warmer, positive brighter) | -0.36 (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 (-0.3 dB at 30 Hz) |
| Frequency Response | - | 20Hz - 20kHz |
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 EUIU UI-05 from audioamigo, bassaudio, faxepremium, fernandagunsan, kuping-sensi and soundcheck39; the Kinera Celest Plutus Beast from arn, audioamigo, cammyfi, eliseaudio, jaytiss, mmagtech, samreviews, silicagel, therollo9, tonedeafmonk and vortexreviews, all via squig.link.
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