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Etymotic ER2SE 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.

Score breakdown

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

Kiwi Ears KE4 leads on 3 of 4 measures.

  • Etymotic ER2SE
  • Kiwi Ears KE4
HearWiki score
65
84
Sound
7.7
8.6
Value
6.3
8.6
Price (USD)
$160
$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 5 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 5 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • ER2SE2019
  • KE420245 yr newer

Specifications

ER2SEKE4
Type
Wired IEMs
Wired IEMs
Price (USD)
$160
$200
HearWiki score
65
84
Released
2019
2024
Availability
Discontinued
Still sold new
Driver
1DD
2DD + 2BA hybrid
Driver type
dynamic
hybrid
Driver configuration
1DD
2DD + 2BA
Driver size
-
10 mm
Drivers per side
1
4
Impedance
15 Ω
28 Ω
Sensitivity
96 dB/mW
-
Active noise cancelling
No
No
Detachable cable
Yes
Yes
Connector
MMCX
3.5 mm

What reviewers said

Etymotic ER2SE

The Etymotic ER2SE is a wired, single-dynamic-driver IEM built for critical listening and reference-style accuracy. It offers strong detail retrieval, transparency, and excellent passive isolation, though its neutral tuning is bass-light and its deep-fit design may not suit everyone. This is a performance-focused earphone for those who prioritize clarity over a colored or exciting sound signature.

  • Pro:Accurate, neutral reference tuning
  • Pro:Excellent passive isolation
  • Pro:Strong detail and transparency
  • Con:Subdued bass response
  • Con:Deep insertion may be uncomfortable
  • Con:Clinical sound not for casual listening

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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