Short answer: the BASN Bmaster, though neither ranks well in its class. It ranks #1156 of 1291 in-ear headphones by sound quality, rated 2.0/5, at $91.99; the 7Hz Legato ranks #1183, rated 1.8/5, and costs $109, so there is little reason to consider the other one. Both are rated below 3.0/5 among the 1291 in-ear headphones, so if sound quality matters, consider the Intuaura Reference 2019 instead, ranked #7 at $34.99.
What the BASN Bmaster does well: The hybrid driver setup pairs two dynamic drivers with a balanced armature, and the wired connection means no battery or pairing to manage. Watch for: 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 7Hz Legato: Bass is lifted about 5.1 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. Watch for: Presence sits about 5.2 dB low with a 6.8 dB dip near 4.3 kHz, so vocals and instruments lose some bite.
Buy the BASN Bmaster. It is rated higher for sound quality than the 7Hz Legato and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Headphones rankings cover every ranked option.
The hybrid driver setup pairs two dynamic drivers with a balanced armature, and the wired connection means no battery or pairing to manage.
Amazon $91.99 eBay
Bass is lifted about 5.1 dB with extension to 20 Hz, giving kick drums and bass lines extra weight.
Linsoul $109 eBayPrices on this page were last checked October 16, 2026 at 5:46 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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Specifications Side By Side
| BASN Bmaster | 7Hz Legato | |
|---|---|---|
| Price | $91.99 | $109 |
| Ranked | #1156 of 1291 in In-Ear Headphones | #1183 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Harman Preference Score | 49 (measured by HypetheSonics, via AutoEQ) | 47 (median of 25 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 3.69 dB standard deviation | 3.63 dB standard deviation |
| Tonal Tilt | -1.43 (negative is warmer, positive brighter) | -1.61 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+4.6 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 12mm dynamic + 1 x 6mm dynamic |
| Back | Closed | Closed |
| Impedance | - | 26 ohms |
| Frequency Response | - | 10Hz - 20kHz (Manufacturer specified) |
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