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Over 30 years ago, Etymotic invented noise-isolating, in-ear
earphones. Etymotic's original design, developed for auditory research
and hearing testing, used balanced -armature receivers and established
these speakers as the gold standard for high-definition, in-ear
earphones. ER4 earphones were the first high-fidelity, noise isolating
in-ear earphones to use this technology in a consumer earphone, and are
recognized as the world leader for response accuracy to which all other
earphones are compared.
Etymotic invented noise-isolating, in-ear earphones. The ER4 MicroPro
series earphones were the first earphones commercialized using balanced
armature 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
Timeless style and fit
Highest noise isolation
Best durability and warranty
What's In the Box?
Contact us now to ask a question about the Etymotic ER4SR IEM:
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