High-fidelity
Noise-isolating earphones
ACCU•Driver™ high performance,
balanced-armature drivers
are specified for an accuracy
response of 85% or better.
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Included
• hf5 earphones
• Assortment of ACCU•Fit™ eartips
• ACCU•Filter™ wax filters with removal tool
• Pouch
Identification
B
A
C
A. Earphones
B. Cable slider
C. 3.5 mm stereo plug
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Care
• Do not expose the earphones to extreme temperatures.
• Avoid dropping and strong impact.
• Leave eartips on the earphones for shock protection.
• Do not pull on the cord to remove the earphone from the
audio device or the ear.
• Clean or replace eartips prior to use by others.
Cleaning and Replacing Eartips
Over time eartips may lose their elasticity. For best performance
and retention,replace 3-flange eartips every 3-6 months.
Replace foam and glider eartips regularly.
To clean 3-flange eartips:
1. Remove eartip from the earphone.
2. Clean with water and mild soap.
3. Dry the eartip before placing it back on the earphone.
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Selecting an Eartip
3-Flange
Foam
Glider
standard
large
The eartip that is most comfortable is the likely choice,but it
MUST SEAL well in your ear. If you can easily hear others when
the volume is off,you don’t have a good seal. Twist it in deeper,
or choose another eartip.
When changing eartips
make sure the eartip fits
securely on the stem of
the earphone.
correct
incorrect
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Proper Insertion
Important: Sound quality,full bass
response and noise isolation all depend
on a good eartip seal in the ear canal.
See a video demonstration at
• Carefully insert the earphone
while pulling up and out on the
back of the ear.
• Twist the earphone up into the ear canal while inserting,
until outside noise is blocked out.
• 3-flange eartip: Moistening eases insertion.
• Foam eartip: Roll down or compress foam eartip before
inserting. Hold the eartip in place for about 5 seconds while
the foam expands to create a tight seal in the ear canal.
• Glider eartip: Simply push into ear canal.
Removal
Remove earphones slowly with a twisting motion to gradually
break the seal. Do not pull on the cable to remove the earphones.
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ACCU•Filter Wax Filters
Etymotic earphones have special ACCU•Filter™ wax filters that
smooth the frequency response and prevent ear wax from
entering the earphones.An ACCU•Filter is located at the end of
the earphone and is visible when the eartip is removed.
If a filter becomes clogged,it should be replaced. A dirty
ACCU•Filter will reduce earphone output. The filter should be
changed if loudness decreases or the sound quality declines.
Note: ACCU•Filters are not reusable.
ACCU•Filter Removal Note:Use the tool to remove the filter.
1.Remove Eartip.
2.Insert tool into
the filter.
3.Remove filter.
ACCU•Filter Replacement Note:Do not use the tool to replace the filter.
1. Insert a new
filter.
3.Re-attach eartip.
2. Press gently
against a hard
surface to secure
the filter in place.
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Etymotic Research Inc.
Etymotic Research has spent over twenty-five years developing
in-ear technology for auditory research,precision monitoring and
critical listening. Etymotic has developed many 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.”
Warranty
Etymotic Research,Inc. warrants this product against defects in
material or workmanship for a period of two years from the date
of original purchase from an authorized Etymotic distributor
or reseller.
Etymotic will repair or replace the defective product at its option
if returned within the warranty period to our designated service
facility. 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.
ETYMOTIC RESEARCH INC.
61 Martin Lane • Elk Grove Village, IL 60007
www.etymotic.com • 1-888-389-6684 • 847-228-0006
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ER005201-B
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