®
ETYMOTIC RESEARCH INC.
61 Martin Lane • Elk Grove Village, IL 60007
www.etymotic.com • 1-888-ETYMOTIC
ER-6 Isolator™ and ER-4 MicroPro™ are trademarks of Etymotic Research, Inc.
KEMAR® is a registered trademark of Knowles Electronics, Inc.
The ER-4 MicroPro™ Earphones and ER-6 Isolator™ Earphones are covered by one or more of the following
U.S. patents: #4,677,679, #4,763,753, #5,887,070 and other patents pending.
ER4-5000-7/03
Etymotic Research, Inc. (ER) is a research, development
and manufacturing company that designs products
to measure, improve and protect hearing. ER has
developed some of the most innovative hearing
technology available today. ER products are used by
musicians and others who insist on superior sound
quality. Etymotic means “true to the ear.”
Other ETYMOTIC RESEARCH consumer products:
ER-6 Isolator Earphones
ER-9, 15, 25 Musicians Earplugs
ER-20 High Fidelity Earplugs
About ETYMOTIC RESEARCH, Inc.
Etymotic Research, Inc. warrants this product against defects in
material or workmanship for a period of 1 year from the date of
purchase. Proof of purchase is required. ER will repair or replace
the defective product at its option if returned within the warranty
period to our service facility at the address below. This warranty
is in lieu of all other warranties, expressed or implied, including,
but not limited to, any implied warranty of merchantability or
fitness for a particular purpose.
Warranty
• ER•4 MicroPro earphones
• 5' cord with 3.5 mm stereo phone plug
• 1⁄4" stereo phone adapter plug
• 6 white flanged eartips
• 10 foam eartips
• Filter changing tool
• 4 replacement filters
• Shirt clip
• Zippered pouch
• Storage box
System Includes
Beige foam eartip
(sm–optional)
Yellow foam eartip
(lg–optional)
Black foam eartip
(med–included)
Filters
Black
foam eartips
Zippered pouch
Filter
changing
tool
The earphones fit into the ear canals with either flanged
soft plastic eartips or foam eartips. The plastic eartips
can be cleaned and reused.
Important: For best performance and the
most