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Kefine Quatio vs Letshuoer S12 Ultra: which should you buy?

Specs, scores and condensed review verdicts for the Kefine Quatio vs Letshuoer S12 Ultra, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.

Score 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 Quatio
  • Letshuoer S12 Ultra
HearWiki score
-
83
Sound
-
8.6
Value
-
8.9
Price (USD)
$130
$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

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.

  • Quatio2025
  • S12 Ultra2025

Specifications

QuatioS12 Ultra
Type
Wired IEMs
Wired IEMs
Price (USD)
$130
$170
HearWiki score
Not scored
83
Released
2025
2025
Availability
Sold new
Sold new
Driver
2DD + 2BA hybrid
1 planar magnetic
Driver type
hybrid
planar
Driver configuration
2DD + 2BA
1 planar magnetic
Driver size
-
14.8 mm
Drivers per side
4
1
Impedance
-
16 Ω
Active noise cancelling
No
-
Detachable cable
Yes
-
Connector
2-pin 0.78 mm
-

What reviewers said

Kefine Quatio

This wired in-ear monitor pairs dual dynamic drivers with dual balanced armatures for a rich, four-driver hybrid sound. It comes with three swappable tuning nozzles, letting you tweak the tonal balance toward a warm, musical character. The detachable 2-pin cable adds practical versatility for audiophiles on the go.

  • Pro:Three interchangeable nozzles for flexible sound tuning
  • Pro:Warm, lush tuning that suits long listening sessions
  • Pro:Detachable 0.78mm cable for easy upgrades or replacement
  • Con:No active noise cancellation, so isolation relies on fit
  • Con:Bulky shell may not suit smaller ears
  • Con:Requires tip rolling to fully realize tuning potential

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.

Compare something else

Swap either side out, or start again from the picker.

New comparisonKefine QuatioLetshuoer S12 Ultra