Etymotic ER4SR Reference Standard High-Fidelity Earphone

ITEM #: ETY-ER4SR MFG #: ER4SR

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ER4SR - Overview

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.

For earphones to have 100% accuracy, a recording of a live performance must produce exactly the same sound at the eardrum as the original performance. To achieve this, the acoustic properties of the ear must be factored in. The acoustic resonance and horn effects of the ear change a flat audio signal entering the open ear into sound with a (2700 Hz) high-frequency boost, which is the same response heard at the eardrum in a typical ear.

  • 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
     
  • Specifications:

    • Frequency Response: 20 Hz - 16 kHz
    • Transducers: 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
    • Cable: 5 ft
    • User Replaceable ACCU-Filters: Yes
    • Custom-Fit Option: Yes
     
  • Warranty:

    • 2 Year
     
  • GTIN:

    0846430002012
     

ER4SR - Required Accessories

    California Residents:
    WARNING:
    Cancer and Reproductive Harm - www.P65Warnings.ca.gov