With all this push for HD video, I would think HQ audio (5.1 surround sound) would be obvious. But I am having trouble finding any TV anime in 5.1; One Piece from Japan is only stereo (movies are an exception), Crunchyroll does not have any 5.1 according to their support, most anime series listed on sale say on Amazon (or even Rightstuf) don't even seem to have a field for the sound type (stereo or surround).
Why is this?
According to a reddit user:
ISDB supports 5.1 but in practice most broadcasts are stereo, with 192k AAC audio.
Another question of mine would be why would the DVD releases not support 5.1?