Hidizs MS2 PRO 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

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Neither pulls ahead overall - they trade wins across the measures.

Hidizs MS2 PRO
Letshuoer S12 Ultra

HearWiki score

Sound

8.0

8.6

Value

9.0

8.9

Price (USD)

$87

$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.

MS2 PRO2025
S12 Ultra2025

Specifications

MS2 PROS12 Ultra

Type: Wired IEMs; Wired IEMs
Price (USD): $87; $170
HearWiki score: 79; 83
Released: 2025; 2025
Availability: Sold new; Sold new
Driver: 1DD + 1BA hybrid; 1 planar magnetic
Driver type: hybrid; planar
Driver configuration: 1DD + 1BA; 1 planar magnetic
Driver size: 10.2 mm; 14.8 mm
Drivers per side: 2; 1
Frequency response: 20 Hz - 40 kHz; -
Impedance: 17 Ω; 16 Ω
Sensitivity: 111 dB/mW; -
Active noise cancelling: No; -
Controls: buttons; -
Weight: 10 g; -
Detachable cable: Yes; -
USB-C: No; -
Connector: 4.4 mm balanced; -

Specification comparison of Hidizs MS2 PRO vs Letshuoer S12 Ultra
Spec	Hidizs MS2 PRO	Letshuoer S12 Ultra
Type	Wired IEMs	Wired IEMs
Price (USD)	$87	$170
HearWiki score	79 / 100 Great	83 / 100 Outstanding
Released	2025	2025
Audio
Driver	1DD + 1BA hybrid	1 planar magnetic
Driver type	hybrid	planar
Driver configuration	1DD + 1BA	1 planar magnetic
Driver size	10.2 mm	14.8 mm
Drivers per side	2	1
Frequency response	20 Hz - 40 kHz	-
Impedance	17 Ω	16 Ω
Sensitivity	111 dB/mW	-
Features
Active noise cancelling	No	-
Controls	buttons	-
Design
Weight	10 g	-
Detachable cable	Yes	-
USB-C	No	-
Connector	4.4 mm balanced	-

What reviewers said

Hidizs MS2 PRO

The Hidizs MS2 PRO is a budget-friendly hybrid IEM that pairs a 10.2mm dynamic driver with a balanced armature for a lively, bass-forward sound. It offers versatile tuning via swappable nozzle filters and a 4.4mm balanced cable, making it a solid pick for those seeking good imaging and technical detail at a low price. While its build and ergonomics impress, the tuning may lean bright for some listeners.

Pro:Strong imaging and technical performance
Pro:Versatile tuning options with nozzle filters
Pro:Engaging bass-forward sound signature

Con:Upper mids and treble can be piercing at times
Con:Midrange may sound slightly recessed
Con:Requires a balanced source for best performance

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.

Compare something else

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

New comparison Hidizs MS2 PRO Letshuoer S12 Ultra