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.

MSRP: $349.00 (US)

Width: 6.25"
Length: 9.25"

Prices and availability subject to change without notice.

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ConditionBrand New (New)
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  • ER4XR Extended Range In-Ear Monitors
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TriStar Music Gear

Daly City, CA, United States
Sales:1,803
Joined Reverb:2017

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