Etymotic Research, Inc. - ER-4 MicroPro Insert Earphones

ER•4 MicroPro™ Earphones

10 Road Trip Tech Essentials
PC Magazine has selected Etymotic ER-4S Earphones as one of their 10 Road Trip Tech Essentials picks. Read more...

Next Best Thing to Live Music

Transparent, reference-quality sound
For audiophiles, performing musicians and recording engineers
For mixing, monitoring and critical listening
Accurate real-ear response
Unsurpassed isolation from outside sound

The ER•4 MicroPro™ earphones are the next best thing to live music, with noise isolation far surpassing that of active noise-canceling earphones. The ER•4s require NO batteries, and can be plugged into any audio source. Their external noise exclusion -- 35 dB with 3-flange eartips, 42 dB with foam eartips -- allows you to hear the full dynamic range of recordings without having to play them at unnaturally high and unsafe levels. The earphones come in three styles: ER•4B, ER•4S, ER•4P.

System Includes

ER•4 MicroPro earphones
5 ft. cord with 3.5 mm stereo phone plug
1/4" stereo phone adapter plug
4 triple-flange eartips (standard size)
2 triple-flange eartips (small)
4 foam eartips
4 glider eartips
Filter changing tool
4 replacement filters
Shirt clip
Pouch
Storage box

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For $299 a pair

	Accessories

	Earphone Comparison

	Which ER•4 Is Right for You?

	Background

	Technical Specifications

	Instructions for Use

	Earphone Insertion Video

	About the Filters

	Reviews

	Customer Feedback

	In-the-Ear Technology

	How We Measure Response Accuracy

	How We Measure Noise Isolation

	Warranty Information

ER•4 User Guide
» 424 KB

ER•4 MicroPro is a trademark of Etymotic Research, Inc. The ER•4 MicroPro Earphones are covered by one or more of the following U.S. patents: #4,677,679, #4,763,753, #5,887,070, RE38351, RE40696 and other patents pending.