Wired IEMs
Binary EP321 MEMS
Not yet scored
$310
Full review dataBinary EP321 MEMS vs CrinEar Reference: which should you buy?
Specs, scores and condensed review verdicts for the Binary EP321 MEMS vs CrinEar Reference, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.
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.
- Binary EP321 MEMS
- CrinEar Reference
HearWiki score
-
86
Sound
-
9.1
Value
-
8.9
Price (USD)
$310
$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
CrinEar Reference (2026) against Binary EP321 MEMS (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.
- EP321 MEMS2025
- Reference20261 yr newer
Specifications
EP321 MEMSReference
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $310
- $350
- HearWiki score
- Not scored
- 86
- Released
- 2025
- 2026
- Availability
- Sold new
- Sold new
- Driver
- 2DD + 3BA + 1MEMS tribrid
- 2DD + 3BA hybrid
- Driver type
- tribrid
- hybrid
- Driver configuration
- 2DD + 3BA + 1MEMS
- 2DD + 3BA
- Driver size
- 10 mm
- 10 mm
- Drivers per side
- 6
- 5
- Impedance
- 13 Ω
- 16 Ω
- Sensitivity
- -
- 104 dB/mW
- Weight
- 7.5 g
- -
- Detachable cable
- Yes
- Yes
- Connector
- 2-pin 0.78 mm
- 4.4 mm balanced
What reviewers said
Binary EP321 MEMS
This wired IEM packs a six-driver tribrid setup with two dynamics, three balanced armatures, and one MEMS unit, aiming for detailed, high-resolution audio with extended treble. Its lightweight metal-free build and detachable 2-pin cable make it a portable option for enthusiasts. Priced around $310, it focuses on pure wired performance without any ANC features.
- Pro:Intricate tribrid driver array for layered sound
- Pro:Lightweight 7.5g design for comfortable wear
- Pro:Detachable 0.78mm 2-pin cable for easy upgrades
- Con:No active noise cancellation
- Con:Requires a good source to manage low impedance
- Con:MEMS driver may sound bright to some listeners
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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