Short answer: the Dita Project M. Both are rated 3.3/5 for sound quality (#912 and #902 of 1291 in-ear headphones), and the Dita Project M costs $325 against $389 for the Fearless Audio S6Rui, with sound quality a draw, the lower price decides it.
The case for the Dita Project M: Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. The catch: Presence sits about 7 dB low with a 9.2 dB dip near 3.9 kHz, so vocals and instruments lose some bite.
Why pick the Fearless Audio S6Rui: Six balanced armature drivers per side earn a preference score of 65 in crinacle’s measurement, a serviceable match to the Harman target. The catch: A 2.7 dB standard deviation from target points to an uneven response that benefits from some EQ.
Buy the Dita Project M. Both are rated the same for sound quality, and it costs $64 less than the Fearless Audio S6Rui.
Still deciding? The full Headphones rankings cover every ranked option.
Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat.
Bloom Audio $325 eBay
Six balanced armature drivers per side earn a preference score of 65 in crinacle’s measurement, a serviceable match to the Harman target.
Linsoul $389.00 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Dita Project M | Fearless Audio S6Rui | |
|---|---|---|
| Price | $325 | $389.00 |
| Ranked | #912 of 1291 in In-Ear Headphones | #902 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Hybrid | Balanced armature |
| Drivers | 1 x 9.8mm dynamic + 1 x balanced armature | 6 x balanced armature |
| Impedance | 32 ohms | 20 ohms |
| Sensitivity | 107 dB/Vrms | 113 dB |
| Harman Preference Score | 65 (median of 11 squig.link measurements, calibrated to AutoEQ) | 65 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.86 dB standard deviation | 2.70 dB standard deviation |
| Tonal Tilt | -0.34 (negative is warmer, positive brighter) | -0.55 (negative is warmer, positive brighter) |
| 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 (-1.4 dB at 30 Hz) |
| Frequency Response | - | 15Hz - 20kHz (Manufacturer specified) |
| Built-in Microphone | - | No |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the Dita Project M from aftersound, bloomaudio, csi-zone, ducbloke, eliseaudio, fahryst, gadgetgenerations, iemocean, jaytiss, kazi, lumerion, obodio, sl0the, soundignity, theaudiostore, therollo9, tonedeafmonk and treblewellxtended; the Fearless Audio S6Rui from csi-zone, lown-fi, soundignity and zerostresslevel, all via squig.link.
Related Headphone Comparisons
More worthwhile head-to-heads for Fearless Audio S6Rui: