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Etymotic ER4 XR with Etymotion Bluetooth Cable

Over 30 years ago, Etymotic invented noise-isolating, in-ear earphones. Etymotic’s original design, developed for auditory research and hearing testing, used balanced–armature receivers and established these speakers as the true reference standard for high-definition, in-ear earphones. Paired with the new Etymotion Wireless Bluetooth cable these earphones are unstoppable and sound better than anything else on the market today. With built in functionality to answer calls, play/pause, and change tracks it’s the ultimate in audiophile portability.

 Experience Sound Like Never Before

Etymotic Research ER4XR Extended Response Earphones Features:

  • Single-driver earphones with detachable Bluetooth 5.0 cable
  • Balanced-armature micro-drivers deliver fast transients and pin-drop detail
  • Frequency- and volume-matched rivers ensure you get studio-quality sound
  • Extended bass response 
  • Swappable ear tips provide up to 42dB of passive external noise isolation
  • In-line remote gives you control over playback
  • Built-in microphone lets you take calls while on the go
  • 24-bit/48kHz Lossless compression ensures you hear the audio as it's intended to be
  • AKM Velvet Sound AK 4331 DAC unit provides impressive sound quality
  • Assorted ear tips include foam and 3-flange tips
  • Shirt clips keep the cable out of your way




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