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Etymotic Research ER4SR Studio Reference In-Ear Monitors

Etymotic Research ER4SR Studio Reference In-Ear Monitors

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Product Description

Etymotic Research ER4SR Studio Reference In-Ear Monitors

Why Etymotic?

Etymotic designs products to measure, improve and protect hearing, and enhance the listening experience of music lovers everywhere. Audio engineers, musicians and audiologists at Etymotic have generated over 100 patents issued and pending.

Why ER4SR Studio Reference?

ER4SR is Etymotic's new reference standard hi-fidelity earphone for those who demand nothing less than the highest fidelity. The next generation of our long-revered flagship earphone, the ER4S, the ER4SR delivers increased accuracy with greater sensitivity.

Like its predecessor, the ER4SR channels are precision matched within an industry-leading 1dB across frequencies from 100Hz to 10kHz.

The new ER4SR incorporates significant cosmetic and functional improvements, from a sleek, anodized and laser-etched aluminum body to the reinforced, user-replaceable detachable cable. The ER4SR is a must have for discerning engineers, audiophiles, and consumers wanting the most accurate in-ear earphone available.


  • Frequency response 20Hz-16kHz
  • Channel matched within 1 dB from 100Hz to 10kHz
  • 35-42 dB noise isolation
  • Impedance 45 ohms
  • Sensitivity: 98 dB SPL at 1kHz, 0.1V drive level
  • 122 dB maximum output

What’s In the Box?

  • Earphones
  • Detachable, 5 ft. cord with 3.5mm gold plated stereo plug
  • ¼” stereo phone adaptor
  • Assortment of eartips
  • Filter removal tool and replacement filters
  • Shirt clip
  • Zippered storage case
  • Performance certificate

Additional Information

Brands Etymotic
UPC 846430002012