DUNU x KOTO ITO VS Letshuoer S12 Ultra
IEM Comparison: Expert & Community Scores Side-by-Side
DUNU x KOTO ITO and Letshuoer S12 Ultra use 2DD+2BA and 1Planar (14.8 mm) driver setups respectively. DUNU x KOTO ITO costs $199 while Letshuoer S12 Ultra costs $169. DUNU x KOTO ITO is $30 more expensive. Letshuoer S12 Ultra holds a clear 0.6-point edge in reviewer scores (7.4 vs 8). Letshuoer S12 Ultra has significantly better mids with a 1-point edge, Letshuoer S12 Ultra has significantly better treble with a 2-point edge, DUNU x KOTO ITO has significantly better dynamics with a 1-point edge and Letshuoer S12 Ultra has better soundstage with a 0.5-point edge.
Insights
| Metric | DUNU x KOTO ITO | Letshuoer S12 Ultra |
|---|---|---|
| Mids | 5 | 6 |
| Treble | 5 | 7 |
| Soundstage | 7.5 | 8 |
| Dynamics | 8 | 7 |
| Tonality | 6.4 | 7 |
| Technicalities | 5 | 7 |
Jaytiss Reviews Comparison
DUNU x KOTO ITO reviewed by
2025-09-11
7.4
Reviewer Score
Youtube Video Summary
Build & accessories land in a solid spot for the price: comfortable shells with secure nozzles, clear L/R marks, and a supple modular cable that swaps between 4.4mm and 3.5mm (no USB-C in-box). The hard case is nicely made and pocketable, and the whole package feels durable if not premium. Nothing glaring in QC—just a clean, practical presentation.
Sonically, this is a bold V-shape—huge sub-bass punch with elevated upper mids to keep things lively. The bass can turn boomy/pillowy on some tracks, and a scoop around 300–800 Hz can leave female vocals a touch recessed; treble is clean and controlled, a little dark up top with limited sparkle. Technicalities are decent rather than class-leading—separation and air trail sets like Punch Audio Martillo or Crescent, while tuning kinships show up against DUNU Glacier and even Grand Maestro-style balances. Compared to value darlings (e.g., Truth Ear Pure, Jazzer Defiant), ITO feels more audiophile-flavored fun than an all-rounder.
In DUNU’s lineup it reads as a unique basshead option: very engaging slam, thick note weight, and non-fatiguing treble, but only average mids/technicalities. Think hip-hop/EDM-friendly impact over neutral precision. Verdict: around 3–3.5 stars—competitive at $200 for those chasing thump and excitement; listeners wanting neutrality, vocal presence, or extra air may prefer other picks or a “tactful V” with less bass and less upper-mid bite.
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Letshuoer S12 Ultra reviewed by
2025-10-05
8
Reviewer Score
Youtube Video Summary
LETSHUOER S12 Ultra wraps up the S12 line with a 14.8 mm planar driver and a familiar metal shell in gunmetal or mocha. The housing is vented, comfy for long sessions, and solidly built with a flat 2-pin interface that grips tips well. The stock package is practical: a soft case, a fair tip spread, a braided cable with swappable 4.4 mm termination, and even a plug-and-play USB-C DAC that performs capably for on-the-go use.
Sonically, this set aims for a mild V-shape with tasteful tweaks that elevate it over prior S12 iterations. There’s a touch more sub-bass than the S12 Pro and a smoother 10 kHz zone, reducing fatigue while keeping upper-treble reach for air. The presentation favors balance over sparkle: detailed without the brittle edge many planars flirt with, and notably non-fatiguing over longer listens. Technical chops are strong for the class—clean, clear, and “planar-fast”—though instrument separation can lag behind pricier hybrids, and the topmost “crispy” sheen is slightly restrained.
On graphs and in practice, S12 Ultra reads as a refined take on modern planars—more bass weight, tidier 4–6 kHz, and better treble behavior than its siblings. Listeners hypersensitive up top may still prefer something like the S15 for a softer treble contour, while those chasing maximal separation may lean to sets like AFUL Performer 7 (with a spicier treble). With the usual planar caveat about unit variance and fit, this edition comes through as the standout of the S12 series: a clean, engaging, and genuinely high-value recommendation under $500.
Jaytiss Youtube Channel
DUNU x KOTO ITO Details
Driver Configuration: 2DD+2BA
Tuning Type: V-Shaped
Brand: DUNU Top DUNU IEMs
Price (Msrp): $199
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Letshuoer S12 Ultra Details
Driver Configuration: 1Planar (14.8 mm)
Tuning Type: U-Shaped
Brand: Letshuoer Top Letshuoer IEMs
Price (Msrp): $169
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DUNU x KOTO ITO Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B- The tuning leans easygoing, yet occasional unevenness nudges it away from greatness. A bit of EQ polish can smooth things nicely.
Average Technical Grade
C+- An honest, middle-of-the-road performance preserves structure without chasing micro-detail. It's respectable for everyday listening sessions.
Letshuoer S12 Ultra Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A-- It balances warmth and clarity well, showing only minor quirks along the way. Timbre feels believable with most instruments.
Average Technical Grade
A-- The presentation feels orderly, balancing workable detail retrieval with acceptable imaging cues. It keeps momentum without smearing transients.
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