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The ER3XR Extended Response offers a modest bass boost, building on the sound quality of the ER3SE, while providing a slight bass boost for those listeners that prefer a stronger low end response.
Etymotic Research ER3XR Extended Response Earphones
Etymotic Research ER3XR Extended Response Earphones

collapse expand iconSpecs

  • Frequency Response: 20 Hz - 16 kHz
  • Transducers: High performance, balanced armature micro-drivers
  • Noise Isolation: 35-42 dB
  • Impedance (@1kHz): 22 Ohms
  • Sensitivity (@1 kHz) SPL at 0.1v: 102 dB
  • Maximum Output (SPL): 120 dB
  • Cable: Detachable, 4 ft
  • Warranty: 2 Year Manufacturer's
  • Custom-Fit Option: Yes

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