Short answer: the Kefine Klean SV. It ranks #73 of 1291 in-ear headphones by sound quality, rated 4.6/5, at $59.99; the EPZ G20 Pro ranks #198, rated 4.3/5, at $59.99. Close enough in price that the sound-quality gap is the deciding factor.
Why pick the Kefine Klean SV: 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 EPZ G20 Pro does well: The median of 3 hobbyist measurements gives it a very good Harman preference score of 78 with a 1.68 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural. The tradeoff: A 6.7 dB peak near 11.9 kHz can make cymbals and sibilance sound sharp.
Buy the Kefine Klean SV. It is rated higher for sound quality than the EPZ G20 Pro at the same price, so only choose the other one for a particular feature it does better.
Still deciding? The full Headphones rankings cover every ranked option.
The median of 18 squig.link measurements gives a preference score of 80.9 and a very smooth 1.28 dB deviation.
Amazon $59.99 eBay
The median of 3 hobbyist measurements gives it a very good Harman preference score of 78 with a 1.68 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural.
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Specifications Side By Side
| Kefine Klean SV | EPZ G20 Pro | |
|---|---|---|
| Price | $59.99 | $59.99 |
| Ranked | #73 of 1291 in In-Ear Headphones | #198 of 1291 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) | 78 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.28 dB standard deviation | 1.68 dB standard deviation |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) | +0.30 (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 (-2.6 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 | 100 dB |
| Weight | 0 lbs (10 g) per earbud | - |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| Built-in Microphone | - | Yes |
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 Kefine Klean SV from ankramutt, atechreviews, audioamigo, bassaudio, csi-zone, dl, eplv, fahryst, fernandagunsan, hbb, jaytiss, musicafe, practiphile, precog, soundcheck39, soundignity, superreview and tonedeafmonk; the EPZ G20 Pro from bassaudio, fernandagunsan and kuping-sensi, all via squig.link.
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