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The ER-4S earphones, part of the Etymotic Research MicroPro series, are among the world leaders for frequency response accuracy at 92%. As such, these earphones are frequently used by professional musicians as in-ear monitors. They offer 98% noise isolation when properly inserted and a braided cable to reduces microphonic effects.

Description

  • Status: Available
  • Availability date: 2002

Availability

  • Alias: ER4S

Also Known As...

  • Color: Black
  • Design: In-ear
  • Physical attachment: Clip-on
  • Connection type: Wired (3.5mm)
  • Wire length: 60.0 inches

Hardware

  • Drivers per ear: 1
  • Impedance : 100 Ω
  • Frequency response (low): 20 Hz
  • Frequency response (high): 16000 Hz

Audio

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