Moondrop x Crinacle Dusk VS Letshuoer S15

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Build impresses out of the box: a premium case, a handsome semi-transparent shell that’s a touch larger than AFUL’s Magic One, a smaller nozzle, and excellent comfort—easy A+. The included DSP cable feels great, while the analog cable comes off a bit cheap for the price. Packaging and accessories sit at an average level overall.

In analog form, this is a Jekyll-and-Hyde situation. Channel matching is spot-on, but the presentation reads flat/neutral to a fault—solid, yet not especially competitive, fitting more a $150–$170 tier for raw value. Versus the original Blessing 2 Dusk, the new Dusk extends better up top with more air, but from bass through upper mids (to ~8 kHz) the older set still vocals better and feels more engaging; upgrading for the analog tuning alone isn’t advised. Alternatives like the PULA PA02 or CKLVX 1DD+4BA hit a similar, clean-neutral aim, while Gizaudio Chopin shows a smarter 5–6 kHz dip, livelier mids, and punchier bass at roughly half the price. Among Crin collabs, it’s clearly more refined than the Dioko, but not a slam-dunk over his other budget-minded sets.

The story flips with the DSP. Engaged, the Dusk becomes an easy recommendation: noticeably more balanced, resolving, and simply fun, earning a “perfect score for value” within the DSP lane. Caveats: Android support is the sweet spot; iPhone compatibility can be finicky, pushing some users to desktop—where manual EQ already exists. Still, the app is simple, the extra tunings are useful, and plug-and-play convenience (no dongle DAC dance) is a win. Bottom line: as an analog IEM, only “good” and overpriced; as a DSP IEM, genuinely excellent—highly worth it if the use case fits.

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Stock tuning lands in the safe-and-smooth lane: a gently warm balance with a slight treble emphasis, nothing egregious and nothing especially standout. It works well for J-pop/K-pop at mid volume thanks to tamed upper-mids that keep sibilance in check. The trade-off is softer, “vanilla” vocals that miss the last bit of extension, air, and micro-detail; turn it up for more presence and the treble gets spicy—not helped by unit variance that can throw a 16k peak. Cymbal detail is decent with minimal “planar timbre,” but it can get a touch sizzly.

Against the field, Dusk struggles to justify the premium. Truthear Nova plays the same all-rounder role for much less while feeling more open up top; want a bit more top-end than Nova, there’s the Chopin at ~$200. Hype 4 comes off as a more well-rounded Dusk—better low-end texture, a hint more vocal reach, and less sharpness—and Quintet delivers a similar idea for cheaper. Even with EQ in the mix, Blessing 3 can match or better the result (smoother treble, no channel imbalance). Net: the sound is good but not special, and the value calculus isn’t favorable.

The supposed differentiator—DSP—isn’t it. The app feels unstable (settings not applying, frequent crashes), Android-only for adjustments, and awkward with external DAC/amps where EQ may not pass through. There’s a minor noise floor between pauses. Of the presets, “Stock 3.5mm (Analog)” and Bass+ are the only keepers; “Stock USB” is warmer but needs more upper-mids, and the Diffuse Field Tilt lands awkwardly. Phone amps also bottleneck staging; better sources open it up—but then the DSP conflicts. Add in QC concerns, and the verdict is clear: a pleasant, inoffensive listen, yet overhyped and overpriced for what it delivers; a solid sub-$200 proposition, not at its current bracket.

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Letshuoer S15 takes the planar recipe in a more natural, neutral direction, dialing back the upper-mids/treble glare that made earlier S12 variants feel “planar.” The result is a heavier note weight, smoother edges, and a timbre closer to a good dynamic driver—without the etched, floaty thinness common to many planars. Vocals sit forward with less Harman-style shout, bass carries satisfying sub-bass rumble with tight mid-bass separation thanks to planar speed, and overall fatigue is low. The trade-off is a presentation that’s more relaxed than hyped: treble sparkle and micro-detail aren’t spotlighted, and those craving sizzle may find it a touch polite.

Against its siblings, S15 is the cleanest, most neutral option—more open and balanced than the darker, ultra-chill S08, and more refined/grounded than older S12 iterations that pushed treble energy. The newer S12 2024 brings back liveliness and air while staying smoother than previous S12s, but S15 remains the pick for a reference-leaning planar with convincing timbre. It costs a bit more than S12 2024, yet what you’re paying for is timbre quality, note density, and a fatigue-free listen that still carries enough low-end punch. For listeners prioritizing naturalness over fireworks, S15 feels like the most mature expression of Letshuoer’s planar line.