Used to just have a node 2i outputting to a mc2500 and mc 75 monoblocks, Sonus Faber speakers, and Rhythmic subwoofers.
Then decided to get a Small Green Machine transport for Roon core, a Sonore UltraRendu as a player and a Mytec Dac+...
...all I can say is the the sound quality took perceptive leaps in improvement.
I am a Roon fan. Also I do not "mid" MQA.