User`s manual
HEADSPEAKER – 5.1 HEADPHONE SYSTEM
Windows XP usually doesn't interfere with channel mapping, thus 6 channel mode is a 
better   starting point   for   5.1   audio.   Naturally,   when full   8-channel  audio   is  available, 
corresponding   8-channel   firmware   should   be   installed   regardless   of   the   operating 
system.
See page 22 for instructions on how to install the firmware.
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