Short answer: a tie on sound quality. Both are rated 3.7/5 (#646 and #660 of 1291 in-ear headphones) at nearly the same price ($31.99 vs $35.99), so choose on features and fit.
Why pick the Kefine Loric: The median of 14 hobbyist measurements gives it a solid Harman preference score of 70 with a 1.99 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural. The tradeoff: A 4.8 dB peak near 8.2 kHz can make cymbals and sibilance sound sharp.
The case for the KZ Carol: Budget true wireless earbuds with hybrid noise cancelling and Bluetooth 5.4, about 7 hours per charge and 42 hours with the case. The tradeoff: A 2.37 dB spread from the target shows peaks and dips that better tuned sets avoid.
Buy the Kefine Loric or the KZ Carol on features: they are rated the same for sound quality at close to the same price.
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The median of 14 hobbyist measurements gives it a solid Harman preference score of 70 with a 1.99 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural.
Amazon $31.99 eBay
Budget true wireless earbuds with hybrid noise cancelling and Bluetooth 5.4, about 7 hours per charge and 42 hours with the case.
Amazon $35.99 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 Loric | KZ Carol | |
|---|---|---|
| Price | $31.99 | $35.99 |
| Ranked | #646 of 1291 in In-Ear Headphones | #660 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | True wireless |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 20 ohms | - |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| Weight | 0 lbs (6 g) | - |
| Harman Preference Score | 70 (median of 14 squig.link measurements, calibrated to AutoEQ) | 70 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.99 dB standard deviation | 2.37 dB standard deviation |
| Tonal Tilt | -0.84 (negative is warmer, positive brighter) | -0.23 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.1 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.8 dB at 30 Hz) |
| Bluetooth Version | - | 5.4 |
| Active Noise Cancelling | - | 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 Loric from aftersound, atechreviews, audioamigo, bassaudio, csi-zone, ducbloke, eplv, fahryst, fernandagunsan, jaytiss, practiphile, silicagel, soundignity and tonedeafmonk; the KZ Carol from aftersound, audioamigo, dhrme, flare, gadgetrytech, obodio, practiphile, pw and regancipher, all via squig.link.
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