Wired IEMs
FiiO FH3
60Average
$120
Full review dataFiiO FH3 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.
- FiiO FH3
- Letshuoer S12 Ultra
HearWiki score
60
83
Sound
6.6
8.6
Value
5.4
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 5 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 5 years between them, that is a thin return - treat this as a restyle rather than a new platform.
- FH32020
- S12 Ultra20255 yr newer
Specifications
FH3S12 Ultra
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $120
- $170
- HearWiki score
- 60
- 83
- Released
- 2020
- 2025
- Availability
- Still sold new
- Sold new
- Driver
- 1DD + 2BA hybrid
- 1 planar magnetic
- Driver type
- hybrid
- planar
- Driver configuration
- 1DD + 2BA
- 1 planar magnetic
- Driver size
- 10 mm
- 14.8 mm
- Drivers per side
- 3
- 1
- Frequency response
- 10 Hz - 40 kHz
- -
- Impedance
- 24 Ω
- 16 Ω
- Sensitivity
- 114 dB/mW
- -
- Active noise cancelling
- No
- -
- Weight
- 7.3 g
- -
- Water resistance
- none
- -
- Detachable cable
- Yes
- -
- USB-C
- No
- -
- Connector
- 3.5 mm
- -
What reviewers said
FiiO FH3
The FiiO FH3 is a wired hybrid in-ear monitor that pairs a 10mm dynamic driver with two balanced armatures for a three-driver setup, offering a bass-forward yet composed sound with clear mids and airy treble. Its lightweight, detachable-cable design and high sensitivity make it easy to drive from a phone, while its tuning leans toward an engaging, relaxed character suited for long listens. Overall, it presents strong value in its price range, though its soundstage is intimate and sub-bass emphasis can color bass timbre.
- Pro:Solid hybrid driver configuration with good bass punch and clarity
- Pro:Comfortable, lightweight build with detachable cable
- Pro:Easy to drive from smartphones or basic sources
- Con:Soundstage feels somewhat narrow
- Con:Sub-bass emphasis can affect bass timbre accuracy
- Con:No accessories or features beyond the basic wired setup
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
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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