Originally Posted by like.no.other.
The firmware update 2.00 you can now have multi-channel via optical using DTS.
DTS is much inferior compare to DSD, AFAIK.
Here's the data intensity per channel for CD, DTS HD and DSD. I don't know where DTS falls but it should be somewhere between CD and DTS HD.
CD is 16 bits 44.1kHz sample rate = 705 kbit/s bitstream
on BR and HD DVDs is 24bits x 96kHz sample rate = 2304 kbit/s bitstream
DSD is 1 bits 64x44.1=2822kHz sample rate = 2822.1kbit/s bitstream
So, yes, Firmware 2.0 will let you do multi-channel TOSLINK outs using DTS, but consider it downmixed to CD quality (similar to hearing your favorite CD over radio broadcast). Feel free to correct me if I am wrong.