Wired IEMs
Letshuoer S12 Ultra
83Outstanding
$170
Full review dataLetshuoer S12 Ultra vs Moondrop RAYS: which should you buy?
On aggregated review scores the Letshuoer S12 Ultra comes out ahead with a HearWiki score of 83. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Letshuoer S12 Ultra - Outstanding overall at around $169.
Wired IEMs
Moondrop RAYS
78Great
$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 5 measures.
- Letshuoer S12 Ultra
- Moondrop RAYS
HearWiki score
83
78
Sound
8.6
7.6
Calls
-
7.5
Value
8.9
7.8
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
Both shipped in 2025. These are 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.
- S12 Ultra2025
- RAYS2025
Specifications
S12 UltraRAYS
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $170
- $100
- HearWiki score
- 83
- 78
- Released
- 2025
- 2025
- Availability
- Sold new
- Sold new
- Driver
- 1 planar magnetic
- 1DD + 1PL hybrid
- Driver type
- planar
- hybrid
- Driver configuration
- 1 planar magnetic
- 1DD + 1PL
- Driver size
- 14.8 mm
- -
- Drivers per side
- 1
- 2
- Impedance
- 16 Ω
- 30 Ω
- Connector
- -
- 2-pin 0.78 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
Moondrop RAYS
The Moondrop RAYS is a wired hybrid IEM that merges a 10mm dynamic driver with a 6mm planar-magnetic driver, aimed at competitive gamers seeking detailed positional audio. It features a USB-C DSP connection and app-based parametric EQ for game-specific tuning, all within a compact dual-driver setup.
- Pro:Hybrid dual-driver design for detailed sound
- Pro:USB-C DSP with parametric EQ via app
- Pro:Game-focused tuning for positional audio
- Con:No active noise cancellation
- Con:Requires USB-C source for full DSP features
- Con:Limited to wired connection only
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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