Wired IEMs
Letshuoer S12 Ultra
83Outstanding
$170
Full review dataLetshuoer S12 Ultra vs Yamaha EPH-100: which should you buy?
Specs, scores and condensed review verdicts for the Letshuoer S12 Ultra vs Yamaha EPH-100, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.
Wired IEMs
Yamaha EPH-100
Not yet scored
$100
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Letshuoer S12 Ultra leads on 3 of 4 measures.
- Letshuoer S12 Ultra
- Yamaha EPH-100
HearWiki score
83
-
Sound
8.6
-
Value
8.9
-
Price (USD)
$170
$100
Generation & platform
The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?
Same generation
The Letshuoer S12 Ultra is 7 years newer, but it is the same generation of hardware: nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price. For 7 years between them, that is a thin return - treat this as a restyle rather than a new platform.
- S12 Ultra20257 yr newer
- EPH-1002018
Specifications
S12 UltraEPH-100
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $170
- $100
- HearWiki score
- 83
- Not scored
- Released
- 2025
- 2018
- Availability
- Sold new
- Discontinued
- Driver
- 1 planar magnetic
- 6 mm dynamic
- Driver type
- planar
- dynamic
- Driver configuration
- 1 planar magnetic
- -
- Driver size
- 14.8 mm
- 6 mm
- Drivers per side
- 1
- 1
- Frequency response
- -
- 20 Hz - 20 kHz
- Impedance
- 16 Ω
- 16 Ω
- Active noise cancelling
- -
- No
- Weight
- -
- 13.5 g
- Connector
- -
- 3.5 mm
What reviewers said
Letshuoer S12 Ultra
The Letshuoer S12 Ultra is a wired in-ear monitor that delivers Hi-Fi sound through a single 14.8mm planar magnetic driver housed in a lightweight aluminum-alloy shell. Aimed at music enthusiasts, it offers the signature planar-driver clarity and detail of the S12 series in a refreshed design, without any active noise cancellation or wireless features. Priced around $169, it's a straightforward, high-performance option for wired listening.
- Pro:Detailed and fast planar magnetic sound
- Pro:Lightweight and durable aluminum-alloy build
- Pro:Accurate bass response with low distortion
- Con:Requires a wired connection, no wireless freedom
- Con:No active noise cancellation for noisy environments
- Con:Open-back style may leak sound in quiet settings
Yamaha EPH-100
The Yamaha EPH-100 are wired in-ear monitors built around a compact 6mm dynamic driver, aiming for clean, low-distortion audio in a lightweight, durable aluminum shell. Their tangle-resistant cable adds everyday convenience, making them a straightforward, no-frills choice for listeners who prefer a physical connection.
- Pro:Compact 6mm driver for focused sound
- Pro:Lightweight aluminum build
- Pro:Tangle-resistant cable
- Con:No active noise cancellation
- Con:Limited frequency range up to 20 kHz
- Con:Single-driver design may lack bass depth for some
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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