Short answer: the KZ Duonic. It ranks #85 of 450 in-ear headphones by sound quality, rated 4.5/5, at $34.99; the Ooopusx OP22 ranks #98, rated 4.4/5, at $34.99. The price gap is small enough that the sound-quality ranking should decide it.
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 tradeoff: 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.
The case for the Ooopusx OP22: Twelve hobbyist measurements on squig.link give the OP22 a preference score of 78.9, and every band from 60 Hz to 16 kHz sits within about 1.3 dB of target. Watch for: Sub-bass falls about 2.3 dB short at 30 Hz, so deep synth bass has less rumble than the bassier KBEAR KB02.
Buy the KZ Duonic. It is rated higher for sound quality than the Ooopusx OP22 at the same price, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| KZ Duonic | Ooopusx OP22 | |
|---|---|---|
| Price | $34.99 | $34.99 |
| Ranked | #85 of 450 in In-Ear Headphones | #98 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 79 (median of 5 squig.link measurements, calibrated to AutoEQ) | 79 (median of 12 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.55 dB standard deviation | 1.53 dB standard deviation |
| Tonal Tilt | -0.13 (negative is warmer, positive brighter) | -0.06 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.3 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 1 planar magnetic) | Hybrid (2 dynamic + 2 balanced armature) |
| Drivers | 1 x 8mm dynamic + 1 x planar magnetic | 1 x 10mm dynamic + 1 x 8mm dynamic + 2 x balanced armature |
| Impedance | 24 ohms | 22 ohms |
| Sensitivity | 103 dB | 124 dB SPL/V |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | - |
Related Headphone Comparisons
How KZ Duonic compares with other leading options:
- Intuaura Reference 2019 vs KZ Duonic
- CCA Phoenix vs KZ Duonic
- KBEAR KB01 vs KZ Duonic
- KZ Duonic vs KZ Vader
- KZ Duonic vs TRI Meteor
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
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
Ooopusx OP22: $34.99 Amazon eBay
Pros: Twelve hobbyist measurements on squig.link give the OP22 a preference score of 78.9, and every band from 60 Hz to 16 kHz sits within about 1.3 dB of target. That makes it one of the tamer budget hybrids, with treble that never jumps more than 3.8 dB and no harsh spikes. Its 124 dB SPL/V sensitivity means a phone drives it to loud levels easily.
Cons: Sub-bass falls about 2.3 dB short at 30 Hz, so deep synth bass has less rumble than the bassier KBEAR KB02. A 3.5 dB dip near 10.2 kHz trims some sparkle and air from cymbals, and slightly thick low mids can make vocals sound a touch dull.
Full Ooopusx OP22 review and specifications →
| Released | Mar 2026 (7 months ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.53 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic + 2 x balanced armature |
| Form Factor | In-ear |
| Harman Preference Score | 79 (median of 12 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 22 ohms |
| Sensitivity | 124 dB SPL/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.3 dB at 30 Hz) |
| Tonal Tilt | -0.06 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons