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OUR PART #: ER4SR MFR #: AMS-ER4SR
Etymotic Research—inventor of noise-isolating in-ear earphones—presents the next generation of Etymotic's long-revered flagship earphone, the ER4SR (Studio Reference) ... Read more
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Etymotic Research—inventor of noise-isolating in-ear earphones—presents the next generation of Etymotic's long-revered flagship earphone, the ER4SR (Studio Reference), part of the ER4® reference earphone series. Developed for auditory research and hearing testing, they use balanced–armature receivers, establishing them as the gold standard for high-definition, in-ear earphones, and were the first high-fidelity, noise isolating, in-ear earphones to offer this technology in a consumer platform, so are recognized as the world leader for signal response accuracy by which all other earphones are measured. Made for those who demand nothing less than the highest fidelity, these are reference-standard high-fidelity earphones. They deliver increased accuracy with greater sound output, or sensitivity, and like their predecessor, their channels are matched within an industry-leading 1 dB across frequencies from 100 Hz to 10 kHz. They also incorporate significant cosmetic and functional improvements, from the sleek, anodized, and laser-etched aluminum body, to the reinforced and user-replaceable detachable cable. A total must-have for discerning engineers, audiophiles, and consumers who want the most accurate in-ear earphone available.
An industry exclusive channel-matching compliance graph signed by the Etymotic engineer who precision-matched and custom-tuned the balanced-armature drivers is included with every pair of ER•4 earphones.
Etymotic offers a cost-effective CUSTOM•FIT solution to make your favorite earphones the best they can be with superb comfort, secure fit, and consistent noise isolation. It requires a brief registration process and a visit with an authorized audiologist to have ear impressions made. Please contact your Sales Pro for more information on this option.
Due to the personal nature of its usage, this product is non-returnable. Please contact your Sales Pro if you need assistance when choosing.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.