Koss KS5429-2 Owner's Manual page 3

Notice:
This Product incorporates copyright protection technology that is
protected by method claims of certain U.S. Patents and other
intellectual property rights owned by Macrovision Corporation and
other rights owners. Use of this copyright protection technology must
be authorized by Macrovision Corporation, and is intended for home
and other limited viewing uses only unless otherwise authorized by
Macrovision Corporation. Reverse engineering or disassembly is
prohibited.
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