Trouble Shooting Guide
Note: The stereophone will not function, and distortion will
occur anytime the signal from the screen to the stereophone is
blocked.
HB79s / HB80s / HB90s
INFRARED WIRELESS STEREOPHONE
OWNER'S MANUAL
No sound from the stereophone
Check that the unit is "on" / Check that the stereophone batteries are
fresh and inserted in the correct direction. / Adjust volume control
Distortion, background noise
Verify you are facing the screen / Check batteries
HB79s / HB80s / HB90s
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No*Questions*Asked Lifetime Warranty
What does your warranty cover? Any defect in material or workmanship.
For how long after the original purchase? A lifetime
What will we do? Provide you with a new, or at our option, a reconditioned unit.
How do you make a warranty claim? First, you must register your product. Go to
Follow the instructions below to send in your product. Properly pack your unit. Include any
cables, etc., which were originally provided with the product. We recommend using the original
carton and packing materials. Include in the package a copy of the sales receipt or other
evidence of date of original purchase. Also print your name and address and a description of the
defect.
Ship the unit standard UPS or equivalent prepaid to:
Koss Stereophones
Warranty/Repair Center
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4129 N Port Washington Ave
Milwaukee, WI 53212-1052 USA
A new or reconditioned unit will be shipped to you prepaid freight.
What does your Warranty not cover? Installation and set-up service adjustments, Batteries,
Damage from misuse and neglect, Products which have been modified or incorporated into other
products, or Products purchased or serviced outside the USA.
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How does state law relate to this warranty? This warranty gives you specific legal rights,
and you may also have other rights which may vary from state to state.
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For products purchased outside the United States and Canada, see dealer for warranty.
LIFETIME WARRANTY
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This Koss product has a Lifetime Limited Warranty which covers normal use by the initial user
or purchaser of this particular Koss product. Koss hereby warrants only to the initial user or
purchaser that this Koss product will be free of any defect in materials and workmanship for
the life of the product. THIS WARRANTY DOES NOT APPLY TO ANY INITIAL USER OR
PURCHASER WHO ALLOWS THIS PRODUCT TO BE USED BY MULTIPLE PERSONS. THIS
WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY FOR THIS KOSS PRODUCT AND IS
IN LIEU OF ALL OTHER WARRANTIES (EXPRESS OR IMPLIED), INCLUDING ANY WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. THE SOLE AND
EXCLUSIVE REMEDIES AVAILABLE TO THE INITIAL USER OR PURCHASER FOR ANY
DEFECTS IN MATERIALS OR WORKMANSHIP SHALL BE THE OBLIGATION OF KOSS, AT ITS
SOLE OPTION, TO EITHER REFUND THE PURCHASE PRICE OF THE KOSS PRODUCT, OR
REPAIR OR REPLACE THE NON-FUNCTIONING OR DEFECTIVE KOSS PRODUCT PROVIDED IT
IS RETURNED TO KOSS IN SECURE PACKAGING TOGETHER WITH A CHECK FOR $6.00 TO
OUR FACTORY AT 4129 N. PORT WASHINGTON AVE, MILWAUKEE, WI 53212. If purchased
outside the U.S., contact the local Koss Authorized Dealer for details. Koss reserves the right
to replace any discontinued product with one of equal value. KOSS SHALL NOT BE LIABLE
FOR ANY LOSS, INJURY OR DAMAGES TO PERSONS OR PROPERTY RESULTING FROM THE
USE OF THIS PRODUCT OR ANY FAILURE OF OR DEFECT IN THIS PRODUCT, NOR SHALL
KOSS BE LIABLE TO THE INITIAL USER OF THIS PRODUCT OR TO ANY OTHER PERSON OR
ENTITY FOR ANY GENERAL, SPECIAL, DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL,
EXEMPLARY, PUNITIVE, OR OTHER DAMAGES OF ANY KIND OR NATURE WHATSOEVER.
THE REPAIR OR REPLACEMENT OF ANY NON-FUNCTIONING OR DEFECTIVE PRODUCT OR
THE REFUND OF THE PURCHASE PRICE, AT KOSS' OPTION, SHALL CONSTITUTE KOSS'
ONLY LIABILITY TO THE INITIAL USER OR PURCHASER, WHETHER SUCH LIABILITY IS
BASED ON CONTRACT, TORT, STRICT LIABILITY OR OTHERWISE. Some states may not
allow the exclusion or limitation of damages set forth herein in which case the above language
may not apply to you. This limited warranty gives you specific legal rights and you may also
have other rights which may vary among states or provinces. If usage of this Koss product
violates the guidelines of this limited warranty, Koss will repair the product and charge the
purchaser for the cost of company time and materials.
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COMPONENTS
The HB79s / HB80s / HB90s IR wireless stereophone
includes the following components:
1. Headband
2. Battery Door
3. LED
4. Power On / Off
Insert Batteries
5. Noise Cancellation On / Off (HB90s ONLY)
6. Channel Selector A / B (HB80s, HB90s ONLY)
7. Volume Control
1. Locate the battery door on the right earcup.
2. To open the battery door, insert a flat-ended
object (like a key) into the slot.
3. Gently open the door.
4. Insert 2 "AAA" batteries.
5. Close battery door(s).
SLOT
Turn on wireless operation
1. Locate the power on / off button on the right earcup.
2. Press button to "on".
3. The LED will be red when the unit is powered on.
Set Volume Control
IMPORTANT SAFETY INFORMATION
1. Locate the volume control on the left earcup.
Avoid playing your stereophone at high volume levels. Some studies have concluded that
prolonged and extensive exposure to noise in excess of 95dB may impair hearing. Never wear
your stereophone while operating a motorized vehicle. It may create a traffic hazard and is
illegal in many areas. Exercise caution if you are wearing your stereophone while engaged in
activities such as walking, race-walking, jogging, cycling, etc. which may bring you in contact
with vehicular traffic.
We are committed to bringing the finest in personal listening to each and
every one of our customers. If we can ever be of service, please do not hestitate
to call us at 1-800-USA-KOSS (U.S., Canada & Mexico only).
Or contact us through the web at WWW.KOSS.COM.
2. Adjust the volume to a comfortable setting.
Turn on noise cancellation (HB90s ONLY)
1. Locate the noise cancellation button on the left earcup.
2. Press button "on".
Channel Selection (HB80s and HB90s ONLY)
1. Locate the channel selection button on the left earcup.
2. Press this button to alternate between the two channels.
4129 North Port Washington Ave. Milwaukee, WI 53212-1052 USA
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