So what's the difference in the decoders? They both do Dolby Digital, DD+, TrueHD, DTS and DTS-MA.
That chart is wrong. If a receiver does Dolby Pro Logic IIx then it also does Pro Logic II.
and what's the difference between DTS-HD, DTS-HD High Resolution and DTS-HD MA? They're all the same to me.
I just saw 4 Red X's and I will assume the 675 has more updated Decoders. Will test out the 675 and my Sony 790 with the Disney WOW and Total Recall 4K Blu-rays to see if they can now be played without having to take the 790 off Audio Auto and put on PCM.