Short answer: the Zero Audio Duoza ZH-DWX10, though neither ranks well in its class. It ranks #428 of 450 in-ear headphones by sound quality, rated 2.1/5, at $89. The HIFIMAN RE600S ranks #443, rated 1.5/5, at $80.73, $8.27 cheaper, which does not close the gap in sound quality. Both are rated below 3.0/5 among the 450 in-ear headphones, and the Intuaura Reference 2019, ranked #5 at $34.99, is a better place to start if sound quality matters.
The Zero Audio Duoza ZH-DWX10 is the better-sounding choice. A dual dynamic driver design at 20 ohms and 100 dB/mW plays at good volume from a phone. The catch: A preference score of 51 in crinacle’s measurement places it well off the response most listeners prefer, so expect a clearly colored sound.
Why pick the HIFIMAN RE600S: At 16 ohms and 102 dB/mW a phone drives it easily, and the single 8.5mm dynamic driver keeps the design simple. The catch: In oratory1990’s measurement bass falls 6 dB below target by 95 Hz and is about 11 dB down at 30 Hz, so music sounds thin, while presence and air sit roughly 10 to 12 dB below target with a 13.4 dB dip near 11.9 kHz.
Buy the Zero Audio Duoza ZH-DWX10. It is rated higher for sound quality, and the $8.27 you would save on the HIFIMAN RE600S does not close the gap.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| Zero Audio Duoza ZH-DWX10 | HIFIMAN RE600S | |
|---|---|---|
| Price | $89.00 | $80.73 |
| Ranked | #428 of 450 in In-Ear Headphones | #443 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 51 (measured by crinacle, via AutoEQ) | 43 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 3.56 dB standard deviation | 4.42 dB standard deviation |
| Tonal Tilt | -1.10 (negative is warmer, positive brighter) | +0.02 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 2 x dynamic | 1 x 8.5mm dynamic |
| Impedance | 20 ohms | 16 ohms |
| Sensitivity | 100 dB/mW | 102 dB/mW |
| Frequency Response | 7Hz - 24kHz (Manufacturer specified) | 15Hz - 22kHz (Manufacturer specified) |
| Sub-bass Extension | - | Falls 6 dB below target at 95 Hz (-11.1 dB at 30 Hz) |
Related Headphone Comparisons
How Zero Audio Duoza ZH-DWX10 compares with other leading options:
- CCA PLA13 vs Zero Audio Duoza ZH-DWX10
- Sennheiser IE 4 vs Zero Audio Duoza ZH-DWX10
- Zero Audio Duoza ZH-DWX10 vs BASN Bmaster
- BASN Bmaster vs HIFIMAN RE600S
- 1MORE Quad Driver vs HIFIMAN RE600S
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
Zero Audio Duoza ZH-DWX10: $89.00 Amazon eBay
Pros: A dual dynamic driver design at 20 ohms and 100 dB/mW plays at good volume from a phone. Its rating matches the 1MORE Penta Driver for less money and sits above the Etymotic ER3SE and KZ ASX, which cost more.
Cons: A preference score of 51 in crinacle’s measurement places it well off the response most listeners prefer, so expect a clearly colored sound. Better tuned in-ears are easy to find for similar money.
Full Zero Audio Duoza ZH-DWX10 review and specifications →
| Released | Dec 2014 (11 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 3.56 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 2 x dynamic |
| Form Factor | In-ear |
| Frequency Response | 7Hz - 24kHz (Manufacturer specified) |
| Harman Preference Score | 51 (measured by crinacle, via AutoEQ) |
| Impedance | 20 ohms |
| Sensitivity | 100 dB/mW |
| Tonal Tilt | -1.10 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -5.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.5 dB | 0.70 |
| Peak | 179 Hz | -5.9 dB | 0.63 |
| Peak | 998 Hz | +5.0 dB | 1.16 |
| Peak | 6,224 Hz | +5.3 dB | 1.71 |
| Peak | 3,746 Hz | +2.8 dB | 4.79 |
| High shelf | 10,000 Hz | -7.1 dB | 0.70 |
| Peak | 9,322 Hz | +4.2 dB | 2.54 |
| Peak | 2,520 Hz | -3.5 dB | 3.73 |
| Peak | 1,593 Hz | +1.2 dB | 2.95 |
| Peak | 3,281 Hz | +1.6 dB | 5.67 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
HIFIMAN RE600S: $80.73 Amazon eBay
Pros: At 16 ohms and 102 dB/mW a phone drives it easily, and the single 8.5mm dynamic driver keeps the design simple. Listeners who want a relaxed sound with no treble glare may find its subdued highs inoffensive.
Cons: In oratory1990’s measurement bass falls 6 dB below target by 95 Hz and is about 11 dB down at 30 Hz, so music sounds thin, while presence and air sit roughly 10 to 12 dB below target with a 13.4 dB dip near 11.9 kHz. That leaves voices and cymbals dull, and a preference score of 43 is among the lowest for in-ears. The BASN Bmaster and KZ ASX both rate higher.
Full HIFIMAN RE600S review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 4.42 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 8.5mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 15Hz - 22kHz (Manufacturer specified) |
| Harman Preference Score | 43 (measured by oratory1990, via AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 102 dB/mW |
| Sub-bass Extension | Falls 6 dB below target at 95 Hz (-11.1 dB at 30 Hz) |
| Tonal Tilt | +0.02 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.7 dB | 0.70 |
| Peak | 786 Hz | -3.0 dB | 1.30 |
| Peak | 10,000 Hz | +5.3 dB | 0.36 |
| Peak | 310 Hz | -3.2 dB | 0.37 |
| Peak | 3,524 Hz | +4.1 dB | 1.66 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 5,718 Hz | -1.6 dB | 6.00 |
| Peak | 1,511 Hz | +0.7 dB | 3.49 |
| Peak | 4,711 Hz | +0.9 dB | 6.00 |
| Peak | 1,086 Hz | -0.5 dB | 3.53 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons