Short answer: the BASN Bmaster, though neither ranks well in its class. It ranks #429 of 450 in-ear headphones by sound quality, rated 2.0/5, at $91.99. The HIFIMAN RE600S ranks #443, rated 1.5/5, at $80.73, $11.26 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 BASN Bmaster is the better-sounding option. The hybrid driver setup pairs two dynamic drivers with a balanced armature, and the wired connection means no battery or pairing to manage. The catch: Presence from 3 to 6 kHz runs about 8.8 dB under target, with a 9.5 dB dip near 4 kHz, so vocals and guitars lose bite and sound recessed.
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. Watch for: 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 BASN Bmaster. It is rated higher for sound quality, and the $11.26 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
| BASN Bmaster | HIFIMAN RE600S | |
|---|---|---|
| Price | $91.99 | $80.73 |
| Ranked | #429 of 450 in In-Ear Headphones | #443 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Harman Preference Score | 49 (measured by HypetheSonics, via AutoEQ) | 43 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 3.69 dB standard deviation | 4.42 dB standard deviation |
| Tonal Tilt | -1.43 (negative is warmer, positive brighter) | +0.02 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) | Falls 6 dB below target at 95 Hz (-11.1 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 1 balanced armature) | Dynamic |
| Drivers | 2 x dynamic + 1 x balanced armature | 1 x 8.5mm dynamic |
| Back | Closed | Closed |
| Impedance | - | 16 ohms |
| Sensitivity | - | 102 dB/mW |
| Frequency Response | - | 15Hz - 22kHz (Manufacturer specified) |
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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
BASN Bmaster: $91.99 Amazon eBay
Pros: The hybrid driver setup pairs two dynamic drivers with a balanced armature, and the wired connection means no battery or pairing to manage. In HypetheSonics’ measurement bass sits about 2.6 dB above the Harman target and sub-bass is close to target, so the tuning suits listeners who want a warm, bass-forward sound. It also rates higher than the 1MORE Quad Driver at a lower price.
Cons: Presence from 3 to 6 kHz runs about 8.8 dB under target, with a 9.5 dB dip near 4 kHz, so vocals and guitars lose bite and sound recessed. Treble and air are also down by roughly 3.7 dB and 8.1 dB, which leaves cymbals dull and the overall sound closed in. The preference score of 49 is well below what most listeners prefer.
Full BASN Bmaster review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 3.69 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 1 balanced armature) |
| Drivers | 2 x dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Harman Preference Score | 49 (measured by HypetheSonics, via AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) |
| Tonal Tilt | -1.43 (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 | -2.6 dB | 0.70 |
| Peak | 3,536 Hz | +6.0 dB | 0.95 |
| Peak | 178 Hz | -4.1 dB | 0.82 |
| Peak | 1,707 Hz | -5.4 dB | 1.07 |
| Peak | 4,911 Hz | +1.8 dB | 0.18 |
| High shelf | 10,000 Hz | +1.5 dB | 0.70 |
| Peak | 7,135 Hz | -3.6 dB | 5.21 |
| Peak | 9,859 Hz | +2.0 dB | 2.95 |
| Peak | 5,469 Hz | +1.4 dB | 4.91 |
| Peak | 62 Hz | +0.4 dB | 2.03 |
- 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