Short answer: the CCA Phoenix. It ranks #37 of 450 in-ear headphones by sound quality, rated 4.7/5, at $33.99; the KZ Duonic ranks #85, rated 4.5/5, and costs $34.99, so there is little reason to consider the other one.
The case for the CCA Phoenix: The median of 14 hobbyist measurements on squig.link gives the Phoenix a preference score of 81.7, with the 1.5 to 12 kHz range staying within about 2.4 dB of target. The tradeoff: Air above 10 kHz is about 4.1 dB above target, which adds a bright sheen that some listeners will find too crisp on harsh recordings.
Why pick 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.
Buy the CCA Phoenix. It is rated higher for sound quality than the KZ Duonic and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| CCA Phoenix | KZ Duonic | |
|---|---|---|
| Price | $33.99 | $34.99 |
| Ranked | #37 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 | 82 (median of 14 squig.link measurements, calibrated to AutoEQ) | 79 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.39 dB standard deviation | 1.55 dB standard deviation |
| Tonal Tilt | -0.07 (negative is warmer, positive brighter) | -0.13 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.7 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 | 33 ohms | 24 ohms |
| Sensitivity | 108 dB | 103 dB |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 10Hz - 20kHz (Manufacturer specified) |
Related Headphone Comparisons
More worthwhile head-to-heads for CCA Phoenix:
- Intuaura Reference 2019 vs CCA Phoenix
- CCA Phoenix vs Tin HiFi C2 Mech Warrior
- Intuaura Reference 2019 vs KZ Duonic
- KZ Duonic vs Ooopusx OP22
- KZ Duonic vs KZ Vader
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
CCA Phoenix: $33.99 Amazon eBay
Pros: The median of 14 hobbyist measurements on squig.link gives the Phoenix a preference score of 81.7, with the 1.5 to 12 kHz range staying within about 2.4 dB of target. Bass runs about 2.2 dB above target from 60 to 200 Hz, giving drums and bass guitar a warm, full body. Its 108 dB sensitivity at 33 ohms means a phone drives it easily.
Cons: Air above 10 kHz is about 4.1 dB above target, which adds a bright sheen that some listeners will find too crisp on harsh recordings. The low mids run about 1.3 dB heavy, slightly thickening male vocals. It is rated equal to cheaper models like the Aoshida E20 and KZ Gale, so it offers no rating advantage for the extra cost.
Full CCA Phoenix review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.39 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 82 (median of 14 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 33 ohms |
| Sensitivity | 108 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) |
| Tonal Tilt | -0.07 (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