Wired IEMs
7Hz Eternal
43Weak
$250
Full review data7Hz Eternal vs CrinEar Reference: which should you buy?
On aggregated review scores the CrinEar Reference comes out ahead with a HearWiki score of 86. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: CrinEar Reference - Outstanding overall at around $350.
Wired IEMs
CrinEar Reference
86Outstanding
$350
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
CrinEar Reference leads on 3 of 4 measures.
- 7Hz Eternal
- CrinEar Reference
HearWiki score
43
86
Sound
5.5
9.1
Value
3.0
8.9
Price (USD)
$250
$350
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 CrinEar Reference is 4 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 4 years between them, that is a thin return - treat this as a restyle rather than a new platform.
- Eternal2022
- Reference20264 yr newer
Specifications
EternalReference
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $250
- $350
- HearWiki score
- 43
- 86
- Released
- 2022
- 2026
- Availability
- Discontinued
- Sold new
- Driver
- 14.5 mm dynamic
- 2DD + 3BA hybrid
- Driver type
- dynamic
- hybrid
- Driver configuration
- -
- 2DD + 3BA
- Driver size
- 14.5 mm
- 10 mm
- Drivers per side
- -
- 5
- Impedance
- 30 Ω
- 16 Ω
- Sensitivity
- -
- 104 dB/mW
- Weight
- 6 g
- -
- Detachable cable
- -
- Yes
- Connector
- MMCX
- 4.4 mm balanced
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
CrinEar Reference
The CrinEar Reference is a wired in-ear monitor with a hybrid 2DD + 3BA driver setup, offering a balanced and detailed sound signature. It features a detachable 4.4mm balanced cable and relies on a tight seal for passive isolation, making it a strong choice for critical listening at its price point.
- Pro:Hybrid driver configuration delivers rich, layered sound
- Pro:Detachable 4.4mm balanced cable for flexible connectivity
- Pro:Good passive isolation from proper eartip seal
- Con:No active noise cancellation, so external noise isn't fully blocked
- Con:Requires a balanced source to fully utilize the 4.4mm connector
- Con:Fit may be finicky for some users to achieve optimal seal
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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