Hidizs ST2 PRO Nebula 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.

Wired IEMs

Score breakdown

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

KZ PRX leads on 4 of 5 measures.

Hidizs ST2 PRO Nebula
KZ PRX

HearWiki score

Sound

6.9

7.8

Calls

5.4

Value

8.2

8.6

Price (USD)

$65

$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

Both shipped in 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.

ST2 PRO Nebula2024
PRX2024

Specifications

ST2 PRO NebulaPRX

Type: Wired IEMs; Wired IEMs
Price (USD): $65; $55
HearWiki score: 71; 80
Released: 2024; 2024
Availability: Still sold new; Still sold new
Driver: 10 mm dynamic; planar magnetic
Driver type: dynamic; planar
Driver size: 10 mm; -
Drivers per side: 1; -
Frequency response: 20 Hz - 40 kHz; -
Sound signature: neutral-warm; -
Impedance: 32 Ω; 15 Ω
Sensitivity: 108 dB/mW; -
Active noise cancelling: No; -
ANC type: none; -
Transparency mode: No; -
Companion app: No; -
Custom EQ: No; -
Wear detection: No; -
Controls: buttons; -
Weight: 7 g; -
Detachable cable: Yes; -
USB-C: Yes; -
Connector: 2-pin 0.78 mm; -
Microphones: 1; -

Specification comparison of Hidizs ST2 PRO Nebula vs KZ PRX
Spec	Hidizs ST2 PRO Nebula	KZ PRX
Type	Wired IEMs	Wired IEMs
Price (USD)	$65	$55
HearWiki score	71 / 100 Good	80 / 100 Great
Released	2024	2024
Audio
Driver	10 mm dynamic	planar magnetic
Driver type	dynamic	planar
Driver size	10 mm	-
Drivers per side	1	-
Frequency response	20 Hz - 40 kHz	-
Sound signature	neutral-warm	-
Impedance	32 Ω	15 Ω
Sensitivity	108 dB/mW	-
Features
Active noise cancelling	No	-
ANC type	none	-
Transparency mode	No	-
Companion app	No	-
Custom EQ	No	-
Wear detection	No	-
Controls	buttons	-
Design
Weight	7 g	-
Detachable cable	Yes	-
USB-C	Yes	-
Connector	2-pin 0.78 mm	-
Calls
Microphones	1	-

What reviewers said

Hidizs ST2 PRO Nebula

The Hidizs ST2 Pro Nebula is a budget-friendly wired USB-C earphone built around a single 10mm dynamic driver, offering a lively and energetic sound signature with pronounced bass. It's designed for everyday convenience with an integrated DAC cable and simple button controls, making it a solid choice for beginners seeking an engaging listen on the go. However, its tuning may not appeal to those wanting a perfectly neutral or reference-style response, and its passive isolation is modest.

Pro:Engaging, bass-forward tuning
Pro:Convenient USB-C connection with built-in DAC
Pro:Comfortable and lightweight fit

Con:Weak passive noise isolation
Con:Treble can be uneven or lack smoothness
Con:Output may get too loud too easily

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.

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New comparison Hidizs ST2 PRO Nebula KZ PRX