Short answer: the Kefine Klean SV. It ranks #51 of 450 in-ear headphones by sound quality, rated 4.6/5, at $59.99. The Kefine Klean ranks #84, rated 4.5/5, at $53.61, $6.38 cheaper, which does not close the gap in sound quality.
What the Kefine Klean SV does well: The median of 18 squig.link measurements gives a preference score of 80.9 and a very smooth 1.28 dB deviation. The catch: A 5.4 dB dip near 9.5 kHz and treble about 2.5 dB under target from 6 to 10 kHz mute cymbal texture, while the air band above 10 kHz rises about 5 dB, so the top end can sound uneven.
The case for the Kefine Klean: Four squig.link measurements give the Klean a preference score of 79.4 with a very smooth 1.32 dB deviation from target. The catch: A 5 dB dip near 9.9 kHz dulls the shimmer of cymbals and strings, and presence sits 1.9 dB below target, softening vocal edges.
Buy the Kefine Klean SV. It is rated higher for sound quality, and saving $6.38 with the Kefine Klean does not make up for the sound-quality gap.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| Kefine Klean SV | Kefine Klean | |
|---|---|---|
| Price | $59.99 | $53.61 |
| Ranked | #51 of 450 in In-Ear Headphones | #84 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 81 (median of 18 squig.link measurements, calibrated to AutoEQ) | 79 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.28 dB standard deviation | 1.32 dB standard deviation |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) | -0.39 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.0 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 | 107 dB | 107 dB |
| Weight | 0 lbs (10 g) per earbud | 0 lbs (10 g) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
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- Kefine Klean SV vs Tin HiFi C2
- CCA Rhapsody vs Kefine Klean SV
- Tin HiFi C2 vs Kefine Klean
- Kefine Klean vs KZ ZEX Pro
- Kefine Klean vs TRN Medusa
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 Klean SV: $59.99 Amazon eBay
Pros: The median of 18 squig.link measurements gives a preference score of 80.9 and a very smooth 1.28 dB deviation. Sub-bass sits within 0.3 dB of target at 30 Hz and upper bass gets a mild lift, so it delivers deep, clean rumble with a warm tone. It rates above the Moondrop Lan and the more expensive Moondrop Golden Ages 2, and each earbud weighs only 10 g.
Cons: A 5.4 dB dip near 9.5 kHz and treble about 2.5 dB under target from 6 to 10 kHz mute cymbal texture, while the air band above 10 kHz rises about 5 dB, so the top end can sound uneven. Presence is also about 1.6 dB shy, which softens vocal bite.
Full Kefine Klean SV review and specifications →
| Released | Feb 2026 (8 months ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.28 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 81 (median of 18 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 107 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.3 dB at 30 Hz) |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) |
| Weight | 0 lbs (10 g) per earbud |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Kefine Klean: $53.61 Amazon eBay
Pros: Four squig.link measurements give the Klean a preference score of 79.4 with a very smooth 1.32 dB deviation from target. Sub-bass 1.3 dB and bass 2.1 dB above target give it a warm, rich low end that suits bassy tastes, while mids stay close to neutral. At 32 ohms and 107 dB it plays well from a phone, and it weighs 10 g.
Cons: A 5 dB dip near 9.9 kHz dulls the shimmer of cymbals and strings, and presence sits 1.9 dB below target, softening vocal edges. It costs more than the equally rated KZ Duonic and Sivga SM100.
Full Kefine Klean review and specifications →
| Released | Oct 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.32 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 79 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 107 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.0 dB at 30 Hz) |
| Tonal Tilt | -0.39 (negative is warmer, positive brighter) |
| Weight | 0 lbs (10 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons