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Etymotic ER4SR & ER4XR Earphones Improve Accuracy or Bass

Etymotic Research ER4XR and ER4SR Earphones

Etymotic Research today announced the ER4SR Studio Reference earphone and ER4XR Extended Response model. Each in-ear headphone costs $50 more than its predecessors, the ER4S and ER4P-T, respectively. The ER4SR improves the accuracy, while providing a significant improvement in sensitivity, making it more compatible with the smartphones and MP3 players on the market today. The ER4XR offers a modest bass boost for anyone looking for exceptional sound quality with just the right amount of low-end enhancement.

The company says the new in-ear headphones meet three design goals: 1) to provide greater accuracy in sound reproduction in the ER4SR Studio Reference earphone, 2) to offer consumers a choice with the ER4XR Extended Response option that delivers a little more bass without sacrificing the overall quality of the listening experience, and 3) a durable cable that is user replaceable. Both models feature 30-40 dB noise isolation, precision-machined, anodized metal bodies and Etymotic’s industry-leading 1-dB match between left and right channels across frequency with individual channel-matching performance charts provided with each pair of earphones.

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“Now, with the arrival of the ER4SR and ER4XR, the world’s most accurate earphone just got better. We have found no multiple-driver design that can match the accuracy of the ER4,” says Etymotic VP of Sales and Marketing Al Arends.

Price and Availability
Product distribution will roll out to various channels over the coming months, but will be available on etymotic.com beginning June 8, 2016.

  • ER4SR Studio Reference – $349
  • ER4XR Extended Response – $349

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