ER•4® microPro® Earphones
Quick Overview
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.
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.
Backed by decades of research and development for the ear
- 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
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