{"product_id":"etymotic-er4sr-studio-reference-earphones-in-ear-monitors-open-box","title":"Etymotic Er4sr Studio Reference Earphones In-Ear Monitors Open Box","description":"\u003cp\u003eEtymotic ER4SR Studio Reference Earphone, Black. 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.\u003c\/p\u003e\n\nHigh performance balanced Armature drivers are precision matched to within 1 dB\n\nSleek, anodized, laser-etched aluminum body\n\nBraided, reinforced 5ft detachable MMCX cables\n\n35-42 dB of noise isolation with a max output of 122 dB\n\nPrecision machined metal bodies with anodized finish","brand":"Etymotic","offers":[{"title":"Default Title","offer_id":48171348492533,"sku":"ETYM:ER4SR-B","price":292.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1221\/0228\/files\/medium_7095186e-f056-4e52-9556-4aedc095c512.jpg?v=1779236056","url":"https:\/\/www.audiotopia.com\/products\/etymotic-er4sr-studio-reference-earphones-in-ear-monitors-open-box","provider":"AudioTopia","version":"1.0","type":"link"}