Short answer: a tie on sound quality. Both are rated 4.6/5 (#51 and #40 of 450 in-ear headphones) at nearly the same price ($59.99 vs $59.99), so choose on features and fit.
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. Watch for: 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.
What the Tin HiFi C2 does well: Across 15 squig.link measurements it reaches a preference score of 81.6 with a 1.42 dB deviation, close to neutral with a slight warm lean. The tradeoff: The 10 to 16 kHz air band runs about 5 dB above target with a 6.2 dB peak near 11.9 kHz, which can make cymbals and hi hats sound a bit sharp to treble sensitive ears.
Buy the Kefine Klean SV or the Tin HiFi C2 on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| Kefine Klean SV | Tin HiFi C2 | |
|---|---|---|
| Price | $59.99 | $59.99 |
| Ranked | #51 of 450 in In-Ear Headphones | #40 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) | 82 (median of 15 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.28 dB standard deviation | 1.42 dB standard deviation |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) | -0.07 (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 (-2.0 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 | 104 dB @ 1kHz 0.179V |
| Weight | 0 lbs (10 g) per earbud | - |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 10Hz - 20kHz (Manufacturer specified) |
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- Kefine Klean SV vs Kefine Klean
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
Tin HiFi C2: $59.99 Amazon eBay
Pros: Across 15 squig.link measurements it reaches a preference score of 81.6 with a 1.42 dB deviation, close to neutral with a slight warm lean. Bass from 60 to 200 Hz is lifted about 1.4 dB for punch while the midrange stays on target, so vocals sound clear and natural. It is rated higher than the Moondrop Lan and the pricier Moondrop Golden Ages 2, and its 32 ohm load runs easily from a phone.
Cons: The 10 to 16 kHz air band runs about 5 dB above target with a 6.2 dB peak near 11.9 kHz, which can make cymbals and hi hats sound a bit sharp to treble sensitive ears. A 3.5 dB dip near 6.5 kHz slightly blunts the leading edge of instruments.
Full Tin HiFi C2 review and specifications →
| Released | Jun 2023 (3 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.42 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 82 (median of 15 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 104 dB @ 1kHz 0.179V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.0 dB at 30 Hz) |
| Tonal Tilt | -0.07 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons