The 5200's have a standard SPDIF coax digital in plus a way to control them externally (with MSR). So if you go 5200 route, any decent USB 'DAC' with SPDIF out will do. It will act just like your existing sound card, so if you are happy with what you already have, nothing else to add except an MSR.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).