EPZ P40 vs Kiwi Ears Aether: which should you buy?

On aggregated review scores the EPZ P40 comes out ahead with a HearWiki score of 82. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: EPZ P40 - Great overall at around $160.

Wired IEMs

Score breakdown

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

EPZ P40 leads on 2 of 4 measures.

EPZ P40
Kiwi Ears Aether

HearWiki score

Sound

8.5

Value

8.0

Price (USD)

$160

$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

EPZ P40 (2026) against Kiwi Ears Aether (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.

P4020261 yr newer
Aether2025

Specifications

P40Aether

Type: Wired IEMs; Wired IEMs
Price (USD): $160; $170
HearWiki score: 82; 82
Released: 2026; 2025
Availability: Sold new; Sold new
Driver: 2DD + 1PL + 1PZT tribrid; 1 planar
Driver type: tribrid; planar
Driver configuration: 2DD + 1PL + 1PZT; 1 planar
Driver size: -; 15.3 mm
Drivers per side: 4; 1
Impedance: 14 Ω; 14 Ω
Sensitivity: -; 105 dB/mW
Active noise cancelling: No; No
Detachable cable: -; Yes
Connector: 2-pin 0.78 mm; 2-pin 0.78 mm

Specification comparison of EPZ P40 vs Kiwi Ears Aether
Spec	EPZ P40	Kiwi Ears Aether
Type	Wired IEMs	Wired IEMs
Price (USD)	$160	$170
HearWiki score	82 / 100 Great	82 / 100 Great
Released	2026	2025
Audio
Driver	2DD + 1PL + 1PZT tribrid	1 planar
Driver type	tribrid	planar
Driver configuration	2DD + 1PL + 1PZT	1 planar
Driver size	-	15.3 mm
Drivers per side	4	1
Impedance	14 Ω	14 Ω
Sensitivity	-	105 dB/mW
Features
Active noise cancelling	No	No
Design
Detachable cable	-	Yes
Connector	2-pin 0.78 mm	2-pin 0.78 mm

What reviewers said

EPZ P40

The EPZ P40 is a wired tribrid IEM that delivers a clean, technically strong sound with excellent midrange presence, controlled bass, and precise imaging for its price. While it shines in resolution and transparency, its tuning can feel sharp or cold to some ears, and it falls just short of class-leading treble refinement. Overall, it's a compelling option under $200 for listeners who value clarity and detail over warmth.

Pro:Excellent midrange clarity and vocal presence
Pro:Tight, well-defined bass response
Pro:Strong technical performance with precise imaging

Con:Treble lacks some extension and refinement
Con:Tuning may come across as sharp or shouty
Con:Limited included eartips

Kiwi Ears Aether

The Kiwi Ears Aether is a single 15.3mm planar driver IEM that delivers a punchy, well-extended bass response and a smooth, non-fatiguing treble, all wrapped in a premium, comfortable shell. Its tuning leans toward a fun yet mature presentation with precise imaging and a wide soundstage, making it a strong contender in the sub-$200 planar market. While its large housing and stock cable pose minor drawbacks, the overall sonic performance and build quality offer excellent value for wired audio enthusiasts.

Pro:Strong, impactful bass with good depth
Pro:Smooth and refined treble without harshness
Pro:Excellent imaging and spacious soundstage

Con:Recessed lower mids may lack warmth for some
Con:Large shell size can be problematic for smaller ears
Con:Stock cable feels below par for the price

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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