CrinEar Reference
CrinEar Reference
4.88 / 5.0
(49) 49 total reviews
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Measurements by Hangout.Audio
The World’s Flattest In-Ear Monitors.
Purpose-built for absolute neutrality, the CrinEar Reference is a precision-engineered in-ear monitor designed to deliver true reference-grade sound. Tuned to a −1.0 dB/octave population-averaged diffuse field target and verified under ITU-T Type 4.3 conditions, the Reference achieves exceptional tonal accuracy, balance, and transparency; making it ideal for critical listening, studio monitoring, and mix evaluation.
At its core is a 2DD + 3BA hybrid driver system, featuring a Horizontally-Opposed Dual Woofer System (HODWS) for clean, controlled bass with reduced distortion, paired with balanced armatures for precise midrange and extended treble detail. A 5-axis CNC-machined aluminium shell offers durability, acoustic stability, and a contoured pseudo-custom fit for long-term comfort.
A benchmark for a new age. The Reference.
What You Get
- CrinEar Reference IEM (2DD + 3BA)
- Detachable 2-pin silver-plated copper cable
- Interchangeable 3.5mm single ended and 4.4 balanced connectors for universal compatibility
- 3 pairs of "standard bore" silicone tips, 3 pairs of "shorter bore" silicone tips, and 4 pairs of shortwide silicone tips in variety of sizes (XS/S/M/L) + 1 pair of M-sized foam tips
- Premium leatherette zip case
Specs
- Driver configuration: 2DD (HODWS) + 3BA
- Impedance: 16Ω @1kHz
- Sensitivity: 104dB/mW @1kHz
- Frequency Response Range: 2Hz ~ 44,000Hz
- Nozzle Width: 6.0mm (lip)
- Cable Material: Silver-plated Copper

I love them this guy knows ice cream and iem’s I preordered his next set. I can’t go wrong
I've never really been an IEM guy and have always preferred speakers or headphones and never had a pair of IEMs that I really liked rather than simply tolerated for the form factor they provide. These are the first pair that I'd go for just for listening because they sound so good.
Tonally one of the best IEMs ever made to target a "neutral" sound. They're the in-ear form of my speakers and I love them for it. It may not be for everyone, if you want something exciting or engaging, look else where. But for something that's clean, natural, plain but still enjoyable, Reference is it.
Very happy with these, up there with much, much more expensive IEMs.
Nicely detailed, and while I might prefer a touch more bass, the bass that is there is excellent. Punchy, well textured, and blends in well to the music.
The 'neutral' tuning means it sounds good with a wide variety of music, portraying them without much colouration. Of course, that also means it might not be the best fit for you or your favourite genre. No such thing as the perfect headphone, after all.
Comfortable fit, can wear for hours without worry, good passive sound isolation.
While I have a couple other IEMs that I think are better (for my preferences), they are both far more expensive, and have tuning that other might not like, or are less comfortable. (for reference: Audeze Eucild, Symphonium X Elise Europa). But that difference is *slight*, and not worth paying up to 4 times as much for.
There's nothing I'm aware of that matches the price/performance of these things.
These are great IEMs for experimenting with EQ because it is so easy to tune the sound without causing weird spikes.