Wired IEMs
Letshuoer S12 Ultra
83Outstanding
$170
Full review dataLetshuoer S12 Ultra vs TRN TA4: 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
TRN TA4
60Average
$98
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
- TRN TA4
HearWiki score
83
60
Sound
8.6
6.8
Value
8.9
4.7
Price (USD)
$170
$98
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 3 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 3 years between them, that is a thin return - treat this as a restyle rather than a new platform.
- S12 Ultra20253 yr newer
- TA42022
Specifications
S12 UltraTA4
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $170
- $98
- HearWiki score
- 83
- 60
- Released
- 2025
- 2022
- Availability
- Sold new
- Discontinued
- Driver
- 1 planar magnetic
- 2DD + 2BA hybrid
- Driver type
- planar
- hybrid
- Driver configuration
- 1 planar magnetic
- 2DD + 2BA
- Driver size
- 14.8 mm
- 10 mm
- Drivers per side
- 1
- 4
- Frequency response
- -
- 20 Hz - 40 kHz
- Impedance
- 16 Ω
- 20 Ω
- Sensitivity
- -
- 105 dB/mW
- Active noise cancelling
- -
- No
- ANC type
- -
- none
- Transparency mode
- -
- No
- Companion app
- -
- No
- Custom EQ
- -
- No
- Wear detection
- -
- No
- Controls
- -
- none
- Voice assistant
- -
- No
- Weight
- -
- 5.7 g
- Water resistance
- -
- none
- Detachable cable
- -
- Yes
- USB-C
- -
- No
- Connector
- -
- 4.4 mm balanced
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
TRN TA4
The TRN TA4 is a budget-friendly hybrid in-ear monitor that packs two dynamic drivers and two balanced armatures into a lightweight shell, offering a spacious and detailed sound signature. It comes with a modular 4.4mm balanced cable and a generous accessory kit, making it a strong value proposition for those seeking technical performance over frills. However, its bright treble can occasionally border on harsh, and the build materials feel less premium than the price might suggest.
- Pro:Strong technical detail and clean bass response
- Pro:Generous accessory package for the price
- Pro:Lightweight earpieces at just 5.7g
- Con:Treble can become harsh on some tracks
- Con:Earpiece materials feel less impressive
- Con:No onboard controls or app support
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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