Short answer: the Fearless Audio S8F. Both are rated 3.5/5 for sound quality (#779 and #795 of 1291 in-ear headphones), and the Fearless Audio S8F costs $489 against $539.10 for the QoA Martini, and with sound quality even, the cheaper one is the better buy.
Why pick the Fearless Audio S8F: Crinacle’s measurement gives it a preference score of 68, a moderate match to the response most listeners prefer. The catch: A 2.5 dB standard deviation from target points to an uneven response.
Why pick the QoA Martini: A six driver tribrid with a bone conduction driver, a dynamic driver and four balanced armatures. The tradeoff: Treble sits about 4.7 dB below target, a dark, relaxed balance.
Buy the Fearless Audio S8F. Both are rated the same for sound quality, and it costs $50.10 less than the QoA Martini.
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Crinacle’s measurement gives it a preference score of 68, a moderate match to the response most listeners prefer.
Linsoul $489.00 eBay
A six driver tribrid with a bone conduction driver, a dynamic driver and four balanced armatures.
Linsoul $539.10 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
| Fearless Audio S8F | QoA Martini | |
|---|---|---|
| Price | $489.00 | $539.10 |
| Ranked | #779 of 1291 in In-Ear Headphones | #795 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 68 (measured by crinacle, via AutoEQ) | 68 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.47 dB standard deviation | 2.32 dB standard deviation |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) | -0.65 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Tribrid |
| Drivers | 8 x balanced armature | 1 x bone conduction + 1 x dynamic + 4 x balanced armature |
| Impedance | 26 ohms | - |
| Sensitivity | 113 dB/mW | - |
| Frequency Response | 15Hz - 20kHz (Manufacturer specified) | - |
| Built-in Microphone | No | - |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.8 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.3 dB at 30 Hz) |
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