Short answer: the Hidizs MS2 Pro. Both are rated 3.9/5 for sound quality (#512 and #468 of 1291 in-ear headphones), and the Hidizs MS2 Pro costs $83.99 against $88.99 for the DUNU Titan S, with sound quality a draw, the lower price decides it.
What the DUNU Titan S does well: Crinacle’s measurement gives it a preference score of 73, and across 34 hobbyist measurements on squig.link the bass, low mids and upper mids all land within half a decibel of the Harman target. Watch for: Hobbyist measurements put sub-bass about 3.2 dB below target, so the deepest synth and cinematic bass hits carry less rumble than the Harman curve calls for.
The case for the Hidizs MS2 Pro: The median of 7 hobbyist measurements gives it a solid Harman preference score of 72 with a 2.12 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural. The tradeoff: A 7.7 dB peak near 8.2 kHz can make cymbals and sibilance sound sharp.
Buy the Hidizs MS2 Pro. Both are rated the same for sound quality, and it costs $5 less than the DUNU Titan S.
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Crinacle’s measurement gives it a preference score of 73, and across 34 hobbyist measurements on squig.link the bass, low mids and upper mids all land within half a decibel of the Harman target.
AliExpress $88.99 eBay
The median of 7 hobbyist measurements gives it a solid Harman preference score of 72 with a 2.12 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural.
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Specifications Side By Side
| DUNU Titan S | Hidizs MS2 Pro | |
|---|---|---|
| Price | $88.99 | $83.99 |
| Ranked | #468 of 1291 in In-Ear Headphones | #512 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 73 (measured by crinacle, via AutoEQ) | 72 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.29 dB standard deviation | 2.12 dB standard deviation |
| Tonal Tilt | +0.29 (negative is warmer, positive brighter) | -0.38 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 11mm dynamic | 1 x 10.2mm dynamic + 1 x balanced armature |
| Impedance | 32 ohms | 17 ohms |
| Sensitivity | 110 dB | 111 dB |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | 20Hz - 40kHz (Manufacturer specified) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.4 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) |
| 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 DUNU Titan S from achoreviews, aden, aftersound, ankramutt, arc, arn, atechreviews, bassaudio, bedrock, boizoff, bryaudioreviews, cqtek, dentreviews, ekaudio, harutohiroki, hbb, ianfann, iemworld, musicafe, nymz, practiphile, precog, pw, ragnarok, recode, rg, soundignity, superreview, suporsalad, tedthepraimortis, therollo9, timmyv, vortexreviews and vsg; the Hidizs MS2 Pro from audioamigo, digaoreviews, joycesreview, soundcheck39, soundignity, tdl and treblewellxtended, all via squig.link.
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