In a Class by Itself
Etymotic invented noise-isolating, in-ear earphones. Etymotic's original insert earphone design, developed for auditory research and medical diagnostics, used balanced armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones. The ER•4 MicroPro series earphones were the first earphones commercialized using this technology and are recognized as the world leader in response accuracy, to which all other earphones are compared. After more than 20 years, these reference-quality earphones are still the choice of serious sound engineers, audiophiles and musicians.
World leader in sound reproduction
Unsurpassed frequency response accuracy and sound quality — 86%+ response accuracy from 20 Hz – 16 kHz
The only earphones with Accu•Driver™ balanced-armature, precision-matched, custom-tuned drivers
Highest output sensitivity in its class
Timeless style and fit
Professional quality and reliability
An assortment of noise-isolating ACCU•Fit™ eartip options to ensure proper seal and comfort
CUSTOM•FIT option available
Highest noise isolation
First earphones to completely seal the ear
98% (35 dB - 42 dB) noise isolation —highest of any earphones or headsets on the market today
Reduction of outside noise reduces the risk of listening at unsafe levels
Best durability and warranty
2-year replacement warranty
Braid-reinforced cable for extremely low microphonic effect
ACCU•Filter™ user-replaceable filters protect the balanced-armature drivers from ear wax
- Technical Specifications
- ER4 microPro earphones.
- Assortment of eartips.
- Filter removal tool and replacement filters.
- Shirt Clip.
- Carrying Case.
- Exclusive channel-matching compliance graph signed by the Etymotic engineer who precision matched and custom tuned the balanced-armature drivers.
Warranty 2 years (local) Availability Available Product Type Earphone Style/Type Universal In-Ear Driver Configuration 1-Driver (Balanced Armature) Frequency Response (Hz) 20 Hz - 16 kHz Impedance (Ω) 4B (100 Ohms) 4S (100 Ohms) 4PT (27 Ohms) Sensitivity 4B (90 dB) 4S (90 dB) 4PT (102 dB) Headphone Design Closed-Back Cable Style Detachable (Customisable, IM, E/LS, others) Input Connectivity 3.5mm stereo
- User Reviews
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