Hidizs MS2-R3 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.

Letshuoer S12 Ultra leads on 3 of 4 measures.

Hidizs MS2-R3
Letshuoer S12 Ultra

HearWiki score

Sound

7.1

8.6

Value

7.3

8.9

Price (USD)

$90

$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

Letshuoer S12 Ultra (2025) against Hidizs MS2-R3 (2024). 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-R32024
S12 Ultra20251 yr newer

Specifications

MS2-R3S12 Ultra

Type: Wired IEMs; Wired IEMs
Price (USD): $90; $170
HearWiki score: 69; 83
Released: 2024; 2025
Availability: Still sold new; Sold new
Driver: 2-driver hybrid; 1 planar magnetic
Driver type: hybrid; planar
Driver configuration: -; 1 planar magnetic
Driver size: 10.2 mm; 14.8 mm
Drivers per side: 2; 1
Frequency response: 20 Hz - 40 kHz; -
Impedance: 18 Ω; 16 Ω
Sensitivity: 112 dB/mW; -
Active noise cancelling: No; -
Controls: buttons; -
Weight: 10 g; -
Detachable cable: Yes; -
USB-C: No; -

Specification comparison of Hidizs MS2-R3 vs Letshuoer S12 Ultra
Spec	Hidizs MS2-R3	Letshuoer S12 Ultra
Type	Wired IEMs	Wired IEMs
Price (USD)	$90	$170
HearWiki score	69 / 100 Good	83 / 100 Outstanding
Released	2024	2025
Audio
Driver	2-driver hybrid	1 planar magnetic
Driver type	hybrid	planar
Driver configuration	-	1 planar magnetic
Driver size	10.2 mm	14.8 mm
Drivers per side	2	1
Frequency response	20 Hz - 40 kHz	-
Impedance	18 Ω	16 Ω
Sensitivity	112 dB/mW	-
Features
Active noise cancelling	No	-
Controls	buttons	-
Design
Weight	10 g	-
Detachable cable	Yes	-
USB-C	No	-

What reviewers said

Hidizs MS2-R3

The Hidizs MS2-R3 is an affordable dual-driver hybrid IEM that combines a 10.2mm dynamic driver with a balanced armature for a lively, V-shaped sound signature. It offers solid build quality, a detachable cable, and a bright treble response that may not suit treble-sensitive listeners, but overall it's a competent, value-focused option in the budget segment.

Pro:Lively, engaging V-shaped sound
Pro:Solid build quality for the price
Pro:Detachable cable for easy replacement

Con:Bright treble can be fatiguing
Con:Lower mids may sound recessed
Con:Not ideal for treble-sensitive users

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-R3 Letshuoer S12 Ultra