Seeaudio Yume VS Letshuoer S12 Ultra
IEM Comparison: Expert & Community Scores Side-by-Side
Seeaudio Yume and Letshuoer S12 Ultra use 1DD+2BA and 1Planar (14.8 mm) driver setups respectively. Seeaudio Yume costs $170 while Letshuoer S12 Ultra costs $169. Seeaudio Yume is $1 more expensive. Letshuoer S12 Ultra holds a decisive 2.1-point edge in reviewer scores (5.5 vs 7.6). Letshuoer S12 Ultra has significantly better bass with a 3.2-point edge, Seeaudio Yume has slightly better mids with a 0.3-point edge, Letshuoer S12 Ultra has significantly better treble with a 2.1-point edge, Letshuoer S12 Ultra has significantly better dynamics with a 3.2-point edge, Letshuoer S12 Ultra has significantly better soundstage with a 1.8-point edge, Letshuoer S12 Ultra has significantly better details with a 3.9-point edge and Letshuoer S12 Ultra has significantly better imaging with a 3.2-point edge.
Insights
| Metric | Seeaudio Yume | Letshuoer S12 Ultra |
|---|---|---|
| Bass | 4.3 | 7.5 |
| Mids | 7.3 | 7 |
| Treble | 5.3 | 7.4 |
| Details | 4 | 7.9 |
| Soundstage | 5.5 | 7.3 |
| Imaging | 4.3 | 7.4 |
| Dynamics | 4 | 7.2 |
| Tonality | 5.8 | 7.5 |
| Technicalities | 5.4 | 7.2 |
Seeaudio Yume Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
5.5Mixed
Letshuoer S12 Ultra Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
7.6Strongly Favorable
Reviews Comparison
Seeaudio Yume reviewed by Jays Audio
7
Reviewer Score
Jays Audio Youtube Channel
Letshuoer S12 Ultra reviewed by Jays Audio
6.5
Reviewer Score
Youtube Video Summary
The Letshuoer S12 Ultra comes through as the smoothest tuning in the S12 family— a sub-bass boosted all-rounder with quick transients and satisfying rumble that makes pop, hip-hop, and EDM notably fun. Technical performance sits around earlier S12 variants, but treble detail is dialed back a touch versus the OG/Pro in exchange for a more natural timbre and less “planar-bright” edge. It’s the bassiest S12 to date, hitting with better texture, impact, and extension, while keeping imaging crisp enough to stay engaging rather than clinical.
Tuning tweaks tame the upper range: a cut past 1.5 kHz and an 8–15 kHz dip ease shout and sibilance, with air returning via a lift around 15 kHz. Vocals sit a bit pulled back and the treble is the least energetic of the series, which helps long-session comfort—though brighter, heavily produced tracks or songs with little low-end can still sound peaky if pushed. Best results come at ~65–70 dB; tip-roll toward clear or bass-supporting tips to smooth the top and reinforce the lows, while avoiding brightening tips that exaggerate energy.
Versus peers, S12 Ultra feels like a bassier, less shouty take on Supermix 4/Nova and a slightly more V-shaped, punchier alternative to Defiant. It’s not a value monster for sheer detail compared with cheaper planars (T10, F1 Pro, etc.), but the payoff is a presentation that’s more musical, smoother, and easier to live with. For listeners wanting added slam without losing the S12’s speed and airy sense of space, this version offers the most enjoyable balance in the lineup.
Jays Audio Youtube Channel
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Seeaudio Yume (more reviews)
Seeaudio Yume reviewed by Super* Review
6*
* score rescaled + normalized
Seeaudio Yume reviewed by Tim Tuned
5
Reviewer Score
Tim Tuned Youtube Channel
Seeaudio Yume reviewed by Shuwa-T
5
Reviewer Score
Seeaudio Yume reviewed by Precogvision
4.6
Reviewer Score
Precogvision Youtube Channel
Letshuoer S12 Ultra (more reviews)
Letshuoer S12 Ultra reviewed by Jaytiss
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
Letshuoer S12 Ultra reviewed by Paul Wasabii
7.6
* Score computed by IEMRanking.com
Youtube Video Summary
Final revision of the series brings a very coherent, slightly warmer presentation with treble pulled into safer territory and mids that feel a bit weightier. Ultra sits between the smoother S08 and the rawer S12 Pro, and it comes across a touch bassier than the graphs suggest. As a single-driver planar, it retains solid resolve and a natural, easy tonality that will suit most listeners, especially at the 169 price point.
Despite graphs looking similar to S12 2024, Ultra sounds smaller and flatter, with less transparency and dynamics. Soundstage is mainly left-right; height and depth are curtailed, so placement is not always in the right place on more spacious tracks. The smoother top end avoids harshness and makes long sessions comfortable, but the trade-off is reduced sparkle and air versus the 2024 tuning.
Versus budget planar standouts like KZ PRX, Ultra is a clear, smoother upgrade; versus S12 2024, it is the safer all-round pick but not as open or exciting. Dense mixes can nudge the bass toward a slight bloom and compress the center image. For most, this is the one S12 to buy; stage and transparency chasers may still prefer the 2024 version.
Paul Wasabii Youtube Channel
Letshuoer S12 Ultra reviewed by Head-Fi.org
8.7
* score rescaled + normalized
Letshuoer S12 Ultra reviewed by Web Search
7.1
Reviewer Score
The Letshuoer S12 Ultra continues the brand’s planar lineage with a 14.8 mm planar-magnetic driver in a compact metal shell. Notable upgrades include a 392-core silver-plated cable with interchangeable 3.5/4.4 mm plugs and even a bundled DT01 Pro Type-C DAC cable in some packages, positioning it as a self-contained portable solution at an MSRP around $169.
Tonally, the Ultra aims for a lively U-shaped balance common to prior S12 variants—crisp upper-treble energy with solid bass presence—while early impressions from show-floor demos frame it as the most refined take yet. That aligns with the S12 family’s reputation for strong resolution and a brisk top-end; the original S12 was praised for technical performance albeit with a brighter tilt, context that helps set expectations for the Ultra’s direction.
As with many planars, the S12 line can benefit from competent source power to realize dynamics and control; community reviews note the Ultra responds well to suitable amplification. Staging remains more intimate than expansive compared to some hybrids, but imaging and micro-detail are competitive at the price, making the Ultra a pragmatic sub-$200 pick for listeners who value clarity and transient speed over warmth.
Seeaudio Yume Details
Driver Configuration: 1DD+2BA
Tuning Type: Neutral
Brand: SeeAudio Top SeeAudio IEMs
Price (Msrp): $170
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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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Seeaudio Yume User Review Score
Average User Scores
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Letshuoer S12 Ultra User Review Score
Average User Scores
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Seeaudio Yume Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
5.5Gaming Grade
B-Letshuoer S12 Ultra Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.2Gaming Grade
A-Seeaudio Yume 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+- Overall technicalities are acceptable, delivering enough clarity for casual sessions. Imaging is serviceable though not immersive.
Letshuoer S12 Ultra Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A- Tuning feels well executed, keeping a natural flow across the spectrum. Switching genres feels seamless.
Average Technical Grade
A-- The presentation feels orderly, balancing workable detail retrieval with acceptable imaging cues. It keeps momentum without smearing transients.
Seeaudio Yume User Reviews
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