I tried this setup but to my ears I have the impression that the system sounds better with the USB connection rather than with the coaxial cable. Using Roon and the lumin as end point, how should the MQA option be set on the Lumin (Off, Core Decode or Pass Through)? My DAC (Copland) is not MQA compatible and how do I set the MQA parameters on Roon?
Thank you