7Hz Eternal vs Kiwi Ears KE4: which should you buy?

On aggregated review scores the Kiwi Ears KE4 comes out ahead with a HearWiki score of 84. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Kiwi Ears KE4 - Outstanding overall at around $199.

Wired IEMs

Score breakdown

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

Kiwi Ears KE4 leads on 4 of 4 measures.

7Hz Eternal
Kiwi Ears KE4

HearWiki score

Sound

5.5

8.6

Value

3.0

8.6

Price (USD)

$250

$200

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 Kiwi Ears KE4 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.

Eternal2022
KE420242 yr newer

Specifications

EternalKE4

Type: Wired IEMs; Wired IEMs
Price (USD): $250; $200
HearWiki score: 43; 84
Released: 2022; 2024
Availability: Discontinued; Still sold new
Driver: 14.5 mm dynamic; 2DD + 2BA hybrid
Driver type: dynamic; hybrid
Driver configuration: -; 2DD + 2BA
Driver size: 14.5 mm; 10 mm
Drivers per side: -; 4
Impedance: 30 Ω; 28 Ω
Active noise cancelling: -; No
Weight: 6 g; -
Detachable cable: -; Yes
Connector: MMCX; 3.5 mm

Specification comparison of 7Hz Eternal vs Kiwi Ears KE4
Spec	7Hz Eternal	Kiwi Ears KE4
Type	Wired IEMs	Wired IEMs
Price (USD)	$250	$200
HearWiki score	43 / 100 Weak	84 / 100 Outstanding
Released	2022	2024
Audio
Driver	14.5 mm dynamic	2DD + 2BA hybrid
Driver type	dynamic	hybrid
Driver configuration	-	2DD + 2BA
Driver size	14.5 mm	10 mm
Drivers per side	-	4
Impedance	30 Ω	28 Ω
Features
Active noise cancelling	-	No
Design
Weight	6 g	-
Detachable cable	-	Yes
Connector	MMCX	3.5 mm

What reviewers said

7Hz Eternal

The 7Hz Eternal is a wired single-dynamic-driver IEM featuring a 14.5 mm LCP diaphragm, housed in an aluminum shell with a sapphire-glass faceplate. Weighing just 6 grams per ear, it's designed for comfortable, extended listening sessions at work or home, delivering a neutral sound profile without active noise cancellation.

Pro:Ultra-lightweight 6g per ear for extended comfort
Pro:High-quality LCP dynamic driver for detailed sound
Pro:Premium aluminum and sapphire-glass construction

Con:No active noise cancellation, so external noise may intrude
Con:Requires a separate amplifier or source for optimal performance
Con:MMCX connectors can be less durable than 2-pin over time

Kiwi Ears KE4

The Kiwi Ears KE4 is a wired hybrid IEM that offers a balanced, relaxing sound with a distinct twist on the popular 'New Meta' tuning, adding extra bass and treble sparkle. It delivers solid midrange clarity and a comfortable fit, making it a versatile choice for many genres, though its smooth presentation may not excite those seeking aggressive or highly dynamic sound.

Pro:Well-balanced hybrid tuning with rich lower mids and airy treble
Pro:Comfortable fit and broad genre versatility
Pro:Good resolution and clarity for its price

Con:Sub-bass can get overpowering at times
Con:Limited resolving power and dynamic impact
Con:Smooth tuning may feel less exciting than V-shaped alternatives

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

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