Short answer: the 1MORE Quad Driver, though neither ranks well in its class. It ranks #438 of 450 in-ear headphones by sound quality, rated 1.7/5, at $119.69. The HIFIMAN RE600S ranks #443, rated 1.5/5, at $80.73, $38.96 cheaper, a saving that is not big enough to make up the sound-quality gap. Both are rated below 3.0/5 among the 450 in-ear headphones, so if sound quality matters, consider the Intuaura Reference 2019 instead, ranked #5 at $34.99.
Why pick the 1MORE Quad Driver: The hybrid design combines one dynamic driver with three balanced armatures, and the 32 ohm impedance and 99 dB sensitivity let it run easily from a phone. Watch for: Treble from 6 to 10 kHz sits about 6 dB under target and a 10.5 dB dip near 8.8 kHz dulls cymbals and detail, while the air region is boosted by 4.2 dB, which makes the top end uneven.
The case for 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 1MORE Quad Driver. It is rated higher for sound quality, and the $38.96 saving on the HIFIMAN RE600S is not enough to make up the difference.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| 1MORE Quad Driver | HIFIMAN RE600S | |
|---|---|---|
| Price | $119.69 | $80.73 |
| Ranked | #438 of 450 in In-Ear Headphones | #443 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Harman Preference Score | 45 (measured by oratory1990, via AutoEQ) | 43 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 4.49 dB standard deviation | 4.42 dB standard deviation |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) | +0.02 (negative is warmer, positive brighter) |
| Sub-bass Extension | Falls 6 dB below target at 40 Hz (-8.3 dB at 30 Hz) | Falls 6 dB below target at 95 Hz (-11.1 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 3 balanced armature) | Dynamic |
| Drivers | 1 x dynamic + 3 x balanced armature | 1 x 8.5mm dynamic |
| Impedance | 32 ohms | 16 ohms |
| Sensitivity | 99 dB | 102 dB/mW |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 15Hz - 22kHz (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| Back | Closed | Closed |
Related Headphone Comparisons
How 1MORE Quad Driver compares with other leading options:
- Jabra Elite Active 65t vs 1MORE Quad Driver
- BASN Bmaster vs 1MORE Quad Driver
- Etymotic ER3SE vs 1MORE Quad Driver
- KZ ASX vs 1MORE Quad Driver
- 1MORE Quad Driver vs Shozy B2
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
1MORE Quad Driver: $119.69 Amazon eBay
Pros: The hybrid design combines one dynamic driver with three balanced armatures, and the 32 ohm impedance and 99 dB sensitivity let it run easily from a phone. It includes a built-in microphone for calls. The tuning leans warm, with bass about 4.3 dB above target, which suits listeners who like a thick low end.
Cons: Treble from 6 to 10 kHz sits about 6 dB under target and a 10.5 dB dip near 8.8 kHz dulls cymbals and detail, while the air region is boosted by 4.2 dB, which makes the top end uneven. Low mids run about 3.9 dB hot, adding bloat to male vocals and bass guitar, and sub-bass is down 4.5 dB so the deepest rumble is thin. The preference score of 45 and a rating below the BASN Bmaster show the tuning is a poor match for most tastes.
Full 1MORE Quad Driver review and specifications →
| Released | Mar 2017 (9 years ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | Yes |
| Connection | Wired |
| Deviation From Target | 4.49 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 3 balanced armature) |
| Drivers | 1 x dynamic + 3 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 45 (measured by oratory1990, via AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 99 dB |
| Sub-bass Extension | Falls 6 dB below target at 40 Hz (-8.3 dB at 30 Hz) |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.6 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 | +8.2 dB | 0.70 |
| Peak | 105 Hz | -6.9 dB | 0.37 |
| Peak | 8,263 Hz | +6.3 dB | 1.29 |
| Peak | 1,031 Hz | +3.4 dB | 0.57 |
| Peak | 346 Hz | -2.1 dB | 0.61 |
| High shelf | 10,000 Hz | -6.4 dB | 0.70 |
| Peak | 4,463 Hz | -1.7 dB | 5.45 |
| Peak | 6,085 Hz | +2.5 dB | 5.92 |
| Peak | 2,047 Hz | +0.7 dB | 3.71 |
| Peak | 1,391 Hz | -0.3 dB | 2.85 |
- 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