User Manual

ETYMOTIC RESEARCH INC.
61 Martin Lane • Elk Grove Village, IL 60007
www.etymotic.com • 888-389-6684
ER•4 MicroPro
TM
is a trademark of Etymotic Research, Inc.
©2009 ER004015-C
ABOUT ET YMOTIC RESEARCH
Etymotic Research is a research,development and manufacturing
company that designs products to measure,improve and protect hearing.
Etymotic has spent over twenty-five years developing in-ear technology for
auditory research,precision monitoring and critical listening. Etymotic has
developed many of the innovative hearing technologies available today.
Etymotic’s products are used by musicians and others who insist on superior
sound quality. Etymotic means“true to the ear.”