Letshuoer S15 VS TANCHJIM x Effect Audio Force
IEM Comparison: Expert & Community Scores Side-by-Side
Letshuoer S15 and TANCHJIM x Effect Audio Force are in-ear monitors. Letshuoer S15 costs $329 while TANCHJIM x Effect Audio Force costs $280. Letshuoer S15 is $49 more expensive. Letshuoer S15 holds a slight 0.3-point edge in reviewer scores (7.4 vs 7.1). TANCHJIM x Effect Audio Force has better mids with a 0.5-point edge, TANCHJIM x Effect Audio Force has significantly better treble with a 1.5-point edge, Letshuoer S15 has significantly better dynamics with a 2-point edge and TANCHJIM x Effect Audio Force has significantly better soundstage with a 1.3-point edge.
Insights
| Metric | Letshuoer S15 | TANCHJIM x Effect Audio Force |
|---|---|---|
| Bass | 6.5 | 7.1 |
| Mids | 7.5 | 8 |
| Treble | 6.5 | 8 |
| Details | 6.5 | 7.1 |
| Soundstage | 6.8 | 8 |
| Imaging | 7 | 7.1 |
| Dynamics | 6 | 4 |
| Tonality | 7 | 6.9 |
| Technicalities | 7.1 | 7.4 |
Letshuoer S15 Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
7.4Generally Favorable
TANCHJIM x Effect Audio Force Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
7.1Generally Favorable
Reviews Comparison
Letshuoer S15 reviewed by Jaytiss
2025-07-16
8
Reviewer Score
Jaytiss Youtube Channel
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TANCHJIM x Effect Audio Force reviewed by Jaytiss
2025-07-16
7.8
Reviewer Score
Jaytiss Youtube Channel
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Letshuoer S15 (more reviews)
Letshuoer S15 reviewed by Shuwa-T
6.6
Reviewer Score
Letshuoer S15 reviewed by Jays Audio
6.5
Reviewer Score
Youtube Video Summary
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.
Jays Audio Youtube Channel
Letshuoer S15 reviewed by Head-Fi.org
8.3
* score rescaled + normalized
TANCHJIM x Effect Audio Force (more reviews)
TANCHJIM x Effect Audio Force reviewed by Z-Reviews
2025-07-31
7.2
* score rescaled + normalized
TANCHJIM x Effect Audio Force reviewed by Gizaudio Axel
2025-07-31
5.5
Reviewer Score
Gizaudio Axel original ranking
Gizaudio Axel Youtube Channel
TANCHJIM x Effect Audio Force reviewed by Web Search
2025-07-19
7.9
Reviewer Score
The TANCHJIM x Effect Audio Force employs a dual dynamic driver configuration, pairing a 10mm titanium-coated bass driver with an 8.2mm beryllium-coated mid-high driver. This setup, managed through Tanchjim's HPFD-Seg crossover technology, aims for cohesive integration, delivering impactful low-end while maintaining clarity in vocals and treble. The notable open-back design incorporates a pressure-relief nozzle to minimize listening fatigue, though isolation remains surprisingly effective despite the acoustic vents.
Tonally, the Force leans toward a balanced signature with a mild bass emphasis, avoiding excessive warmth while retaining texture in kick drums and basslines. Treble extension is smooth and non-fatiguing, though some may find airiness slightly reserved compared to brighter tunings. The standout inclusion is the Type-C DSP cable, enabling deep customization via Tanchjim's app—including parametric EQ and Harman target presets—which significantly refines the stock tuning for personal preference.
Technically, the open-back architecture contributes to an expansive soundstage with precise imaging, excelling in complex tracks where instrument separation matters. While dynamics are competent, micro-detail retrieval doesn’t quite match elite hybrid or EST-equipped IEMs in its price tier. The co-engineered Effect Audio cable and ergonomic resin shells ensure long-wearing comfort, rounding out a package that prioritizes refinement over raw resolution.
Letshuoer S15 Details
Driver Configuration:
Tuning Type: n/a
Brand: Letshuoer Top Letshuoer IEMs
Price (Msrp): $329
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TANCHJIM x Effect Audio Force Details
Driver Configuration: 2DD
Tuning Type: Neutral with Bass Boost
Brand: TANCHJIM Top TANCHJIM IEMs
Price (Msrp): $279.99
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Letshuoer S15 User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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TANCHJIM x Effect Audio Force User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
No user reviews yet. Be the first one who writes a review!
Letshuoer S15 Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.8Gaming Grade
B+TANCHJIM x Effect Audio Force Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.3Gaming Grade
A-Letshuoer S15 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A-- A smooth, agreeable balance keeps the presentation engaging without obvious flaws. Only sensitive ears will nitpick the bumps.
Average Technical Grade
A-- Technical chops are reliable, pairing tidy separation with a soundstage that stays conservative. Micro-detail is decent, though never spotlighted.
TANCHJIM x Effect Audio Force Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B+- Expect a friendly tonal balance that could use polish but remains inviting. Great for casual listening, less so for purists.
Average Technical Grade
A-- It manages detail and layering well enough, even if the stage feels only moderately sized. You get a clear sense of left and right, if not depth.
Letshuoer S15 User Reviews
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