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In the United States:
Koss Corporation
4129 N. Port Washington Ave.
Milwaukee, WI 53212
1-800-USA-KOSS
email: customersupport@koss.com

In Canada:
Koss Corporation
1-800-USA-KOSS
email: customersupport@koss.com

Outside the USA and Canada, please contact your local authorized Koss distributor/repair centre here.

For further assistance, please contact: customersupport-intl@koss.com

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