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Headphones
Engineers accurate, deep-insertion in-ear monitors out of a hearing-research lab rather than a consumer audio brand.
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about etymotic
Etymotic Research was founded in 1983 by Mead Killion in Elk Grove Village, Illinois, with roots in acoustic research and the hearing-aid industry. The name means "true to the ear," and the brand's premise is accuracy: products built to reproduce or measure sound without coloration. Etymotic developed early insert earphones in the mid-1980s and, in 1991, the ER-4, a noise-isolating high-fidelity in-ear earphone that became a reference template for the in-ear monitor category that followed. The current lineup centers on the ER4SR and ER4XR balanced-armature in-ear monitors, with deep-insertion eartips for high passive isolation, alongside the more affordable ER2 series and a parallel line of hearing-protection and musician earplug products that share the same acoustic engineering. Etymotic occupies a specific, niche position: in-ear monitors and hearing-health gear, not loudspeakers, competing with the IEM lines from Shure, Westone, and similar makers on accuracy and fit rather than spectacle. It is US-headquartered and US-distributed directly from Elk Grove Village, with a long presence on Head-Fi and multiple Stereophile reviews across its earphone generations. The brand exhibits at HIGH END in Vienna for 2026. The company is based and operated in Elk Grove Village, Illinois.