ER4 SR by : Charles Kelley : Dave Haywood : Hillary Scott : Jason Gambill : Lady Antebellum
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.
Sample Audio & etc.
Kit Contents Closeup ER4SR Studio Reference Earphones
| Media ||General Merchandise|
| Length x Width ||9.25 x 6.25 inches |
| Shipping Weight||0.93 pounds |
|East Coast Music Product Code ||ZHL214953|
| 1st Publication Date||11/2016|
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