KZ Castor Pro vs Tangzu Waner S.G: which should you buy?

On aggregated review scores the Tangzu Waner S.G comes out ahead with a HearWiki score of 82. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Tangzu Waner S.G - Outstanding overall at around $19.

Wired IEMs

Score breakdown

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

Tangzu Waner S.G leads on 5 of 5 measures.

KZ Castor Pro
Tangzu Waner S.G

HearWiki score

Sound

7.0

8.0

Calls

4.5

Value

8.7

9.5

Price (USD)

$28

$19

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 Castor Pro is 2 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.

Castor Pro20242 yr newer
Waner S.G2022

Specifications

Castor ProWaner S.G

Type: Wired IEMs; Wired IEMs
Price (USD): $28; $19
HearWiki score: 73; 82
Released: 2024; 2022
Availability: Still sold new; Still sold new
Driver: 2× 10 mm dynamic; 10 mm dynamic
Driver type: dynamic; dynamic
Driver size: 10 mm; 10 mm
Drivers per side: 2; -
Frequency response: 20 Hz - 40 kHz; -
Impedance: 16 Ω; 20 Ω
Active noise cancelling: No; -
ANC type: none; -
Transparency mode: No; -
Companion app: No; -
Custom EQ: No; -
Wear detection: No; -
Controls: buttons; -
Voice assistant: No; -
Weight: -; 4 g
USB-C: No; -
Connector: 3.5 mm; -

Specification comparison of KZ Castor Pro vs Tangzu Waner S.G
Spec	KZ Castor Pro	Tangzu Waner S.G
Type	Wired IEMs	Wired IEMs
Price (USD)	$28	$19
HearWiki score	73 / 100 Great	82 / 100 Outstanding
Released	2024	2022
Audio
Driver	2× 10 mm dynamic	10 mm dynamic
Driver type	dynamic	dynamic
Driver size	10 mm	10 mm
Drivers per side	2	-
Frequency response	20 Hz - 40 kHz	-
Impedance	16 Ω	20 Ω
Features
Active noise cancelling	No	-
ANC type	none	-
Transparency mode	No	-
Companion app	No	-
Custom EQ	No	-
Wear detection	No	-
Controls	buttons	-
Voice assistant	No	-
Design
Weight	-	4 g
USB-C	No	-
Connector	3.5 mm	-

What reviewers said

KZ Castor Pro

The KZ Castor Pro is a budget-friendly dual-dynamic IEM that offers lively, adjustable sound via its quad-switch tuning system. With a strong focus on bass flexibility and overall value, it provides a comfortable fit and good technical performance for the price, though it may not drastically outperform the original Castor for everyone. It is particularly suited for bass-heavy genres and gaming, making it a versatile pick in the affordable segment.

Pro:Quad-switch tuning for flexible sound adjustment
Pro:Strong bass response and low-end control
Pro:Comfortable fit for long listening sessions

Con:May not be a major upgrade over the standard Castor
Con:Lacks advanced features like ANC or app support
Con:Sound signature might be too bass-forward for some listeners

Tangzu Waner S.G

The Tangzu Waner S.G is a budget-friendly wired IEM with a compact, lightweight build and a 10mm dynamic driver. Its tuning leans warm and smooth, offering a relaxed, music-first sound that punches well above its price point for everyday listening.

Pro:Warm, easygoing sound signature
Pro:Very lightweight and compact
Pro:Detachable 0.78mm two-pin cable

Con:No active noise cancellation
Con:Lacks water resistance
Con:Not for those seeking technical detail

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 KZ Castor Pro Tangzu Waner S.G