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Etymotic Research ER4® XR Extended Response Precision Matched In-Ear Earphones - Black

Original price $349.00 - Original price $349.00
Original price $349.00
$349.00
$349.00 - $349.00
Current price $349.00

Product Description:

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.