Etymotic Research ER4SR Headphones Etymotic Research
Etymotic Research ER4SR Headphones Etymotic Research
Etymotic Research ER4SR Headphones Etymotic Research
Etymotic Research ER4SR Headphones Etymotic Research
Etymotic Research

Etymotic Research ER4SR


Regular price $349.00
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Developed as an update to Etymotic’s ER-4 flagship-line of earphones, the Etymotic ER4SR deliver reference-quality sound reproduction with high output levels for discerning sound engineers, audiophiles, and musicians who demand the highest fidelity.

The ER4SR feature balanced-armature technology, custom-tuned drivers, L-R channels matched within an industry-leading 1 dB, and 3-flange eartips which completely seal the ear to offer an impressive 98% of sound isolation. Their high sensitivity allows them to deliver a robust sound level up to 122 dB, making them well suited for portable media players with low output.

The ER4SR combine style and functionality with a sleek, anodized and laser-etched aluminum body, and a detachable, reinforced cable which is user-replaceable. They come with four pairs of 3-flange eartips, two pairs of foam eartips, a shirt clip, a filter removal tool &filters, and a zippered storage case.

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 ER4SR 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!*

High-performance, balanced-armature micro-drivers
Left/Right Channel Matching
Within 1 dB from 100 Hz to 10 kHz
Frequency Response
20 Hz to 16 kHz
Noise Isolation
35 to 42 dB
45 Ohms
98 dB with 100 mV drive
104 dB with 200 mV drive
Maximum Output
122 dB
Detachable, 5' / 1.5 m
  • Etymotic Research ER4SR In-Ear Studio Reference Headphones
  • Detachable 5' Cable with 3.5mm Gold-Plated Stereo Plug
  • 2 x Pairs Standard 3-Flange Eartips
  • 2 x Pairs Large 3-Flange Eartips
  • 2 x Pairs Large Black Foam Eartips
  • Filter-Removal Tool and Filters
  • Shirt Clip
  • 1/4" Stereo Phone Adaptor
  • Zippered Storage Case
  • Limited 2-Year Warranty