Short answer: a tie on sound quality. Both are rated 4.4/5 (#99 and #109 of 450 in-ear headphones) at nearly the same price ($129 vs $129), so choose on features and fit.
The case for the Kefine Quatio: In the median of 13 squig.link measurements it scores 78.8 with a smooth 1.38 dB spread and no treble peak above 1.5 dB, so cymbals and sibilance never turn harsh. Watch for: A 4 dB dip near 3.6 kHz and presence about 2.5 dB under target push vocals slightly back and soften attack.
What the Queen of Audio Ryusei does well: Its single dynamic driver earns a preference score of 78.8 and a smooth 1.37 dB spread in the median of 4 squig.link measurements. The tradeoff: Presence drops about 4.1 dB below target, softening vocal edge and snare attack.
Buy the Kefine Quatio or the Queen of Audio Ryusei on features: they are rated the same for sound quality at close to the same price.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| Kefine Quatio | Queen of Audio Ryusei | |
|---|---|---|
| Price | $129.00 | $129.00 |
| Ranked | #99 of 450 in In-Ear Headphones | #109 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 79 (median of 13 squig.link measurements, calibrated to AutoEQ) | 79 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.38 dB standard deviation | 1.37 dB standard deviation |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) | -0.46 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.8 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature) | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic + 2 x balanced armature | 1 x dynamic |
| Impedance | 32 ohms | - |
| Sensitivity | 107 dB | - |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| Built-in Microphone | No | - |
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Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Headphones In Full
Kefine Quatio: $129.00 Amazon eBay
Pros: In the median of 13 squig.link measurements it scores 78.8 with a smooth 1.38 dB spread and no treble peak above 1.5 dB, so cymbals and sibilance never turn harsh. Bass rises about 1.8 dB above target with full extension to 20 Hz, giving a warm, full low end that suits bass lovers. Its 32 ohm, 107 dB load is easy to drive from a phone.
Cons: A 4 dB dip near 3.6 kHz and presence about 2.5 dB under target push vocals slightly back and soften attack. The air band runs 1.3 dB low, so it sounds less airy and spacious than brighter rivals, and the equally rated 7Hz Salnotes Dioko costs less.
Full Kefine Quatio review and specifications →
| Released | Jul 2025 (1 year ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.38 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic + 2 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 79 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 107 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Queen of Audio Ryusei: $129.00 Bloom Audio eBay
Pros: Its single dynamic driver earns a preference score of 78.8 and a smooth 1.37 dB spread in the median of 4 squig.link measurements. Bass rises about 3.3 dB above target between 60 and 200 Hz, giving rich, punchy low end and warmth that suits bassy and warm tastes. Upper mids stay on target, so vocals keep their natural tone.
Cons: Presence drops about 4.1 dB below target, softening vocal edge and snare attack. Treble is uneven, with a 6.5 dB peak near 8.4 kHz that can sharpen sibilance and a 5.5 dB dip near 11 kHz that trims air, and the low mids run 1.3 dB hot, adding some thickness.
Full Queen of Audio Ryusei review and specifications →
| Released | 2026 (this year) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.37 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 79 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.8 dB at 30 Hz) |
| Tonal Tilt | -0.46 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons