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Hidizs Mermaid MS2 vs KZ PRX: which should you buy?

On aggregated review scores the KZ PRX comes out ahead with a HearWiki score of 80. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: KZ PRX - Great overall at around $55.

Score breakdown

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

KZ PRX leads on 4 of 4 measures.

  • Hidizs Mermaid MS2
  • KZ PRX
HearWiki score
62
80
Sound
6.8
7.8
Value
7.6
8.6
Price (USD)
$63
$55

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 KZ PRX is 3 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 3 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • Mermaid MS22021
  • PRX20243 yr newer

Specifications

Mermaid MS2PRX
Type
Wired IEMs
Wired IEMs
Price (USD)
$63
$55
HearWiki score
62
80
Released
2021
2024
Availability
Discontinued
Still sold new
Driver
2-driver hybrid
planar magnetic
Driver type
hybrid
planar
Driver size
10.2 mm
-
Drivers per side
2
-
Frequency response
20 Hz - 40 kHz
-
Impedance
18 Ω
15 Ω
Sensitivity
112 dB/mW
-
Active noise cancelling
No
-
Weight
10 g
-
Detachable cable
Yes
-
USB-C
No
-
Connector
3.5 mm
-

What reviewers said

Hidizs Mermaid MS2

The Hidizs Mermaid MS2 is a budget-friendly hybrid in-ear monitor that pairs a 10.2mm dynamic driver with an additional driver for a balanced, coherent sound. Its lightweight resin shell and detachable cable make it a practical daily driver, while its tuning leans toward a lively, detailed presentation that suits energetic music genres. It offers strong value for its price, though its forward treble may not appeal to those who prefer a smoother, more relaxed listening experience.

  • Pro:Coherent hybrid tuning with good detail retrieval
  • Pro:Lightweight resin shell for comfortable wear
  • Pro:Detachable cable for easy replacement or upgrades
  • Con:Treble can be over-energetic for sensitive listeners
  • Con:Not a universally flattering tuning for all genres
  • Con:Lacks accessories or features beyond the basics

KZ PRX

The KZ PRX is a budget-friendly planar magnetic IEM that offers a balanced, warm-leaning sound with strong detail retrieval and capable imaging for its price. It excels in sub-bass presence and smooth mids, though it demands proper amplification and ear tips to perform at its best. Its soundstage is decent but not exceptionally wide, and the stock cable is a noted weak point.

  • Pro:Excellent value for a planar IEM
  • Pro:Balanced, warm sound with good detail
  • Pro:Strong imaging and separation for the price
  • Con:Requires a capable source and good ear tips
  • Con:Stock cable limits performance
  • Con:Soundstage is only medium-sized

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 comparisonHidizs Mermaid MS2KZ PRX