Thanks Bee, there are many options it seems depending on what parts you have and where you want to go.
I see people use PCs, NUCs and also Dune-HD Solo or similar as end points.
Not sure I want a PC or NUC, maybe the Dune-HD will fit my need, not sure how many multichannel videos or audio files I'll play, nowadays it's more streaming.
But at some point I will need to go 4k and maybe even support the new surround audio formats.

I just don't get it why Meridian has nothing for that while a slew of smaller companies do. No updated HD722 and no new surround processor. It's annoying.

Main: Marantz Cinema 50, Meridian 271, DSP7200.2, DSP5200HC, DSP5000 rears, Meridian 210.
PC/Headphones: Mytek Liberty II, Sansui CA-F1, Sansui B-2301, Sennheiser HD800, Kef R3