Etymotic Research ER4S Headphones Etymotic Research Default Title
Etymotic Research ER4S Headphones Etymotic Research
Etymotic Research ER4S Headphones Etymotic Research
Etymotic Research

Etymotic Research ER4S


Regular price $299.00
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The Etymotic Research ER4S stereo headphones feature an ultra-lightweight design, up to 42dB of external noise attenuation, and an enhanced output level for both the high and low frequency range, a combination that ensures clear, natural listening enjoyment at safe and moderate playback levels. These headphones have the most accurate frequency response for monitoring musical material, and are recommended for home stereo and computer use, while also satisfying the requirements of most portable devices.

* is very pleased to announce that you have even more options to pay for your Etymotic ER4S in-ear headphones! Now when you hit the Pay with Crypto button, you have the option to pay with currencies such as NANO, Bitcoin, Litecoin, Ethereum and more! We are very excited to able to give you these options now and for the future!*

balanced armature
Frequency Range
20 Hz to 16 kHz
100 Ohms
108 dB/mW
Maximum Input Power
3.0 Vrms (Continuous)
3.5 mm Stereo Mini Plug with 1/4" Adapter
Cable Length
5' (1.5 m)
1 oz (28 g)
  • Etymotic Research ER4S - Noise-Attenuating Audiophile Portable Stereo Headphones
  • 5' Cable
  • 1/4" Stereo Phone Adapter
  • 6 x 3-Flange Eartips
  • 10 x Foam Eartips
  • Filter Changing Tool
  • 4 x Replacement Filters
  • Shirt Clip
  • Carrying Pouch
  • Storage Box
  • 1-Year Limited Warranty