Oh the dvds with laserdisc scan? That’s a very neat thing to have!

Would still recommend 4k77 😅

You can often find torrents around for sacd’s or dvdaudio - but there isn’t any good place as far as I know

Not to mention a LOT of surround music is mixed terribly, with the exception of a few individuals. Steven wilson does amazing surround mixes, and has remixed several commercial releases