Short answer: the KBEAR KB01. Both are rated 4.5/5 for sound quality (#78 and #85 of 450 in-ear headphones), and the KBEAR KB01 costs $29.99 against $34.99 for the KZ Duonic, so with nothing between them on sound quality, price settles it.
The case for the KBEAR KB01: Nine hobbyist measurements on squig.link put its preference score at 79.6 with a smooth 1.36 dB deviation from target. The catch: A 4.9 dB dip near 6.2 kHz softens attack on snares and guitars, then a 4.2 dB peak near 11.9 kHz can make some cymbals sound slightly splashy.
The case for the KZ Duonic: Five squig.link measurements give the Duonic a preference score of 79.2, a strong showing for a cheap dynamic and planar hybrid. The catch: Air above 10 kHz runs about 5.2 dB hot with a 5.5 dB peak near 8.1 kHz, so cymbals can turn splashy and bright tracks fatiguing.
Buy the KBEAR KB01. Both are rated the same for sound quality, and it costs $5 less than the KZ Duonic.
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Specifications Side By Side
| KBEAR KB01 | KZ Duonic | |
|---|---|---|
| Price | $29.99 | $34.99 |
| Ranked | #78 of 450 in In-Ear Headphones | #85 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 80 (median of 9 squig.link measurements, calibrated to AutoEQ) | 79 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.36 dB standard deviation | 1.55 dB standard deviation |
| Tonal Tilt | -0.47 (negative is warmer, positive brighter) | -0.13 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.4 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid (1 dynamic + 1 planar magnetic) |
| Drivers | 1 x 10mm dynamic | 1 x 8mm dynamic + 1 x planar magnetic |
| Impedance | 32 ohms | 24 ohms |
| Sensitivity | 109 dB | 103 dB |
| Frequency Response | - | 10Hz - 20kHz (Manufacturer specified) |
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- Moondrop Chu 2 DSP vs KBEAR KB01
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- Intuaura Reference 2019 vs KZ Duonic
- KZ Duonic vs Ooopusx OP22
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
KBEAR KB01: $29.99 Amazon eBay
Pros: Nine hobbyist measurements on squig.link put its preference score at 79.6 with a smooth 1.36 dB deviation from target. Sub-bass lands right on target and the 60 to 200 Hz bass is lifted about 1.3 dB, giving a warm, full sound that suits bass lovers. It costs less than the Moondrop Lan, which shares its rating.
Cons: A 4.9 dB dip near 6.2 kHz softens attack on snares and guitars, then a 4.2 dB peak near 11.9 kHz can make some cymbals sound slightly splashy. The KZ Merga has the same rating for even less money.
Full KBEAR KB01 review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.36 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 80 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 109 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.4 dB at 30 Hz) |
| Tonal Tilt | -0.47 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
KZ Duonic: $34.99 Amazon eBay
Pros: Five squig.link measurements give the Duonic a preference score of 79.2, a strong showing for a cheap dynamic and planar hybrid. Bass sits about 2.7 dB above target with sub-bass extending to 20 Hz, so it delivers warm, energetic low end for V-shaped tastes. It costs less than the equally rated Kefine Klean and Ooopusx OP24.
Cons: Air above 10 kHz runs about 5.2 dB hot with a 5.5 dB peak near 8.1 kHz, so cymbals can turn splashy and bright tracks fatiguing. A 3.5 dB dip near 3.8 kHz and a presence band 2 dB below target recess vocals slightly behind the boosted bass and treble.
Full KZ Duonic review and specifications →
| Released | 2025 (1 year ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.55 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 planar magnetic) |
| Drivers | 1 x 8mm dynamic + 1 x planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 79 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 24 ohms |
| Sensitivity | 103 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) |
| Tonal Tilt | -0.13 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons