Etymotic Research ER-4P

The ER-4P, part of the Etymotic Research MicroPro series, are optimized for usage with portable media players. Such devices often lack the capability to properly drive high-end earphones, and the ER-4P is specifically balanced to account for this. They offer 98% noise isolation and a braided cable to reduce microphonic effects when listening.

  • Status: Available
  • Availability date: 2004
  • Price at launch: $330.00

Basic Specs

Alias ER4P
Design In-ear
Physical attachment Clip-on
Connection type Wired (3.5mm)

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Tech Specs

Also Known As...
Alias ER4P
Hardware
Color Black
Design In-ear
Physical attachment Clip-on
Connection type Wired (3.5mm)
Wire length 60.0 inches
Audio
Drivers per ear 1
Impedance 27 Ω
Frequency response (low) 20 Hz
Frequency response (high) 16000 Hz
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