Short answer: the Kefine Klanar. Both are rated 3.6/5 for sound quality (#701 and #711 of 1291 in-ear headphones), and the Kefine Klanar costs $114 against $119 for the NF Acous NA20, with sound quality a draw, the lower price decides it.
What the Kefine Klanar does well: The median of 20 hobbyist measurements gives it a solid Harman preference score of 69 with a 2.14 dB spread. The tradeoff: Presence sits about 3.4 dB low with a 4.7 dB dip near 3.6 kHz, so vocals and instruments lose some bite.
What the NF Acous NA20 does well: The median of 11 hobbyist measurements gives it a solid Harman preference score of 69 with a 2.31 dB spread, and its mids sit within about 0.8 dB of target, so vocals and instruments sound natural. Watch for: A 9.2 dB peak near 11.5 kHz can make cymbals and sibilance sound sharp.
Buy the Kefine Klanar. Both are rated the same for sound quality, and it costs $5 less than the NF Acous NA20.
Still deciding? The full Headphones rankings cover every ranked option.
The median of 20 hobbyist measurements gives it a solid Harman preference score of 69 with a 2.14 dB spread.
HiFiGo $114 eBay
The median of 11 hobbyist measurements gives it a solid Harman preference score of 69 with a 2.31 dB spread, and its mids sit within about 0.8 dB of target, so vocals and instruments sound natural.
Amazon $119.00 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
| Kefine Klanar | NF Acous NA20 | |
|---|---|---|
| Price | $114 | $119.00 |
| Ranked | #701 of 1291 in In-Ear Headphones | #711 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Planar | Dynamic |
| Drivers | 1 x 14.5mm planar magnetic | 1 x dynamic |
| Impedance | 16 ohms | 32 ohms |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 9Hz - 40kHz |
| Weight | 0 lbs (12.5 g) | - |
| Harman Preference Score | 69 (median of 20 squig.link measurements, calibrated to AutoEQ) | 69 (median of 11 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.14 dB standard deviation | 2.31 dB standard deviation |
| Tonal Tilt | -0.56 (negative is warmer, positive brighter) | -0.25 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+2.1 dB at 30 Hz) |
| Sensitivity | - | 109 dB/mW |
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 Klanar from achoreviews, aftersound, arn, audioamigo, cqtek, csi-zone, elrics, ianfann, jaytiss, lumerion, mmagtech, musicafe, pw, silicagel, sl0the, soundcheck39, soundignity, timmyv, vortexreviews and vsg; the NF Acous NA20 from arn, audioamigo, cqtek, ducbloke, joycesreview, koi, lumerion, obodio, practiphile, pw, theaudiostore, tonedeafmonk and treblewellxtended, all via squig.link.
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