| Re: Whats difference between PCM and RAW?
PCM=Pulse Code Modulation (outputs in 2 channel stereo)
I'm sure someone will be able to give you a far more technical answer but the quick answer is, unless you set your DVD's audio output to RAW(Bitstream) you will not be able to output 5.1 via digital co-ax/optical cable to an AV Amp/Receiver for surround sound (5.1/DTS).
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