Asus P5E3 Premium/WiFi-AP@n - Manual (Page 144)

5-26 Chapter 5: Software support
5.3.10 AI Audio 2 (SoundMAX ® High Definition Audio utility)
The ADI AD1988B High Definition Audio CODEC provides 8-channel audio
capability through the SoundMAX ® audio utility with AudioESP™ software to
deliver the ultimate audio experience on your PC. The software implements high
quality audio synthesis/rendering, 3D sound positioning, and advanced voice-input
technologies.
Follow the installation wizard to install the ADI AD1988B Audio Driver from the
support DVD that came with the motherboard package to activate the SoundMAX ®
audio utility.
If the SoundMAX ® audio utility is correctly installed, you
will find the SoundMAX ® / SoundMAX ® BlackHawk icon
on the taskbar.
You must use 4-channel, 6-channel or 8-channel speakers for this setup.