User's Manual

28 ASUS Xonar U3 PLUS
Q3:WillPCMsoundoutputthroughS/PDIFbejust2channelsevenwith
different analog output channels?
Answer:
The S/PDIF protocol specication (IEC-60958) can only carry 2-channel PCM data
or non-PCM AC3/DTS data. So, when a user selects PCM output for S/PDIF, the
Xonar sound card will always deliver 2 channel PCM data through the S/PDIF
output port.