Wired IEMs
Kefine Klanar
68Good
$120
Full review dataKefine Klanar vs Letshuoer S12 Ultra: 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
Letshuoer S12 Ultra
83Outstanding
$170
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.
- Kefine Klanar
- Letshuoer S12 Ultra
HearWiki score
68
83
Sound
7.3
8.6
Value
6.0
8.9
Price (USD)
$120
$170
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 2 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.
- Klanar2023
- S12 Ultra20252 yr newer
Specifications
KlanarS12 Ultra
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $120
- $170
- HearWiki score
- 68
- 83
- Released
- 2023
- 2025
- Availability
- Discontinued
- Sold new
- Driver
- 14.5 mm planar magnetic
- 1 planar magnetic
- Driver type
- planar
- planar
- Driver configuration
- -
- 1 planar magnetic
- Driver size
- 14.5 mm
- 14.8 mm
- Drivers per side
- -
- 1
- Impedance
- 16 Ω
- 16 Ω
- Weight
- 12.6 g
- -
What reviewers said
Kefine Klanar
The Kefine Klanar is a budget-friendly planar IEM that impresses with its balanced tuning and strong technical performance for the price. It delivers a wide soundstage, solid bass, and clear treble, though it requires careful source pairing and has some vocal and midrange limitations. Overall, it's a competitive option for those seeking planar sound without a high cost.
- Pro:Wide and immersive soundstage
- Pro:Strong sub-bass and clear treble
- Pro:Easy to drive with neutral gear
- Con:Vocals can sound recessed
- Con:Lower midrange feels thinner
- Con:Average isolation from outside noise
Letshuoer S12 Ultra
The Letshuoer S12 Ultra is a wired in-ear monitor built around a single 14.8mm planar magnetic driver housed in a lightweight aluminum shell. It delivers the signature planar sound of the S12 line—fast, detailed, and punchy—in a refreshed design aimed at hi-fi enthusiasts. With a low 16-ohm impedance, it pairs easily with most sources, though it lacks any active noise cancellation.
- Pro:Fast, detailed planar sound with strong dynamics
- Pro:Lightweight and sturdy aluminum-alloy build
- Pro:Easy to drive thanks to low impedance
- Con:No noise cancellation or isolation features
- Con:Planar timbre may not suit all listeners
- Con:Cable and accessories are basic for the price
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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