Short answer: a tie on sound quality. Both are rated 3.5/5 (#779 and #793 of 1291 in-ear headphones) at nearly the same price ($489 vs $489), so choose on features and fit.
The case for 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 Fearless Audio S8Pro: Bass runs about 5 dB above target from 60 to 200 Hz in HypetheSonics’ measurement, giving a thick, punchy low end that suits listeners who like a V-shaped or warm sound. Watch for: Treble from 6 to 10 kHz sits nearly 6 dB above target with an 8.5 dB peak near 8.6 kHz, which can make cymbals and sibilance sharp and fatiguing at higher volume.
Buy the Fearless Audio S8F or the Fearless Audio S8Pro on features: they are rated the same for sound quality at close to the same price.
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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
Bass runs about 5 dB above target from 60 to 200 Hz in HypetheSonics’ measurement, giving a thick, punchy low end that suits listeners who like a V-shaped or warm sound.
Linsoul $489.00 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 | Fearless Audio S8Pro | |
|---|---|---|
| Price | $489.00 | $489.00 |
| Ranked | #779 of 1291 in In-Ear Headphones | #793 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 (measured by HypetheSonics, via AutoEQ) |
| Deviation From Target | 2.47 dB standard deviation | 2.72 dB standard deviation |
| Tonal Tilt | -0.40 (negative is warmer, positive brighter) | -0.08 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Balanced armature |
| Drivers | 8 x balanced armature | 8 x balanced armature |
| Impedance | 26 ohms | 15 ohms |
| Sensitivity | 113 dB/mW | 113 dB/mW |
| Frequency Response | 15Hz - 20kHz (Manufacturer specified) | 15Hz - 20kHz (Manufacturer specified) |
| Built-in Microphone | No | 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 (-1.0 dB at 30 Hz) |
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