*Check with our team or your local store for availability.
We guarantee that all of our stock is 100% genuine,
New Zealand sourced stock, with full local warranty.


  • Unsurpassed frequency response accuracy and sound quality
  • 98% (35 dB - 42 dB) noise isolation
  • Braid-reinforced cable for extremely low microphonic effect
  • 2-year replacement warranty

Frequency Response

20 Hz - 16 kHz


High performance, balanced armature micro-drivers

Noise Isolation

35 - 42 dB

Impedance (@1kHz)

4XR (45 Ohms) 4SR (45 Ohms)

Sensitivity (@1 kHz) SPL at 0.1v

4XR (98 dB) 4SR (98 dB)

Maximum Output (SPL)

122 dB


Detachable, 5 ft

User Replaceable ACCU-Filters


Custom-Fit Option


  • Etymotic ER4SR In-Ear Earphones
  • Detachable 5 ft. cord with 3.5mm gold plated stereo plug
  • 6.35mm stereo phone adaptor
  • Assortment of eartips
  • Filter removal tool and replacement filters
  • Shirt clip
  • Zippered storage case
  • Performance certificate

Customer Reviews

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