Wired IEMs
Letshuoer S12 Ultra
83Outstanding
$170
Full review dataLetshuoer S12 Ultra vs Whizzer A15 Pro: which should you buy?
Specs, scores and condensed review verdicts for the Letshuoer S12 Ultra vs Whizzer A15 Pro, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.
Wired IEMs
Whizzer A15 Pro
Not yet scored
$120
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
- Whizzer A15 Pro
HearWiki score
83
-
Sound
8.6
-
Value
8.9
-
Price (USD)
$170
$120
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 7 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 7 years between them, that is a thin return - treat this as a restyle rather than a new platform.
- S12 Ultra20257 yr newer
- A15 Pro2018
Specifications
S12 UltraA15 Pro
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $170
- $120
- HearWiki score
- 83
- Not scored
- Released
- 2025
- 2018
- Availability
- Sold new
- Discontinued
- Driver
- 1 planar magnetic
- 10 mm dynamic
- Driver type
- planar
- dynamic
- Driver configuration
- 1 planar magnetic
- -
- Driver size
- 14.8 mm
- 10 mm
- Drivers per side
- 1
- 1
- Frequency response
- -
- 20 Hz - 40 kHz
- Impedance
- 16 Ω
- 16 Ω
- Sensitivity
- -
- 98 dB/mW
- Active noise cancelling
- -
- No
- Controls
- -
- none
- Weight
- -
- 8.9 g
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
Whizzer A15 Pro
The Whizzer A15 Pro is a wired in-ear monitor with a sturdy metal construction and detachable MMCX cables, designed for listeners who prefer a bright and airy sound. Its 10mm dynamic driver delivers a clear presentation focused on midrange and treble detail, making it a solid pick for vocal-centric music and treble-sensitive ears.
- Pro:Metal build quality
- Pro:Detachable MMCX cables
- Pro:Bright, detailed treble and mids
- Con:No inline controls
- Con:Lacks noise cancellation
- Con:Treble may be too sharp for some
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.