About this gear
The ER4SR is Etymotic's flagship reference IEM, delivering studio-grade neutral sound with exceptional clarity and detail retrieval. Designed for professional monitoring, critical listening, and mastering, it prioritizes accuracy over coloration with a lean, unforgiving presentation that reveals the true character of recordings.
About Etymotic
American hearing research company founded in 1983 by Dr. Mead Killion in Elk Grove Village, Illinois. Etymotic literally means 'true to the ear' — their ER4 series defined the concept of reference IEM tuning, adhering to the diffuse-field target response with scientific precision. Known for deep-ins...
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