I run Roon on a Mac Mini that sends files via ethernet and USB to DACs. The files are those I’ve ripped, as well as from Qobuz and Tidal. I was given a Bluesound Vault 2i recently, but I’m not sure how it fits into my existing setups, or what it adds. I think the Ayre Codex has two inputs and can take USB from the Roon network and directly from the Vault 2i. The Ayre QX-5 Twenty digital hub has both ethernet and USB inputs. Is the Vault 2i primarily a NAS?