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Etymotic ER4SR Studio Reference Earphones
Etymotic ER4SR Studio Reference Earphones

Etymotic ER4SR Studio Reference Earphones

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SoundPro Item: 89740
MSRP: $389.99
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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 sound output, or sensitivity. Like its predecessor, the ER4SR channels are matched within an industry-leading 1dB across frequencies from 100Hz to 10 kHz. 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.

Etymotic ER4SR Features

  • Unsurpassed frequency response accuracy and sound quality — 92%+ response accuracy from 20 Hz – 16 kHz
  • The only earphones with balanced-armature, precision-matched, custom-tuned drivers
  • Highest output sensitivity in its class
  • Professional quality and reliability
  • An assortment of noise-isolating eartip options to ensure proper seal and comfort
  • CUSTOM•FIT option available
  • First earphones to completely seal the ear
  • 98% (35 dB - 42 dB) noise isolation —highest of any earphones or headsets on the market today
  • Reduction of outside noise reduces the risk of listening at unsafe levels
  • 2-year replacement warranty
  • Braid-reinforced cable for extremely low microphonic effect
  • User-replaceable filters protect the balanced-armature drivers from ear wax
  • ER4SR Studio Reference Earphones1
  • Detachable, 5 ft. cord with 3.5mm gold plated stereo plug1
  • ¼” stereo phone adapter1
  • Dual flange silicone eartip pair: S1
  • Dual flange silicone eartip pair: M1
  • Dual flange silicone eartip pair: L1
  • Dual flange silicone eartip pair: XL1
  • Triple flange eartip pair: standard1
  • Triple flange eartip pair: large1
  • Foam pair: standard2
  • Filter removal tool1
  • Replacement filter1
  • Shirt clip1
  • Zippered storage case1
  • Performance certificate1
  • Frequency Response 20 Hz – 16 kHz
  • Transducers Single high-performance balanced armature per channel.
  • Noise Isolation 35dB using silicone ear tips, 42dB using foam ear tips
  • Impedance 45 Ohms @ 1kHz
  • Sensitivity 98 dB @ 1kHz, 1mW
  • Maximum Output (SPL) 122 dB
  • Cable Detachable reinforced, twisted 5 ft with MMCX connectors
  • User Replaceable ACCU-Filters Yes
  • Custom-Fit Option Yes

In The Box

Etymotic ER4SR Studio Reference Earphones

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