@wklie Peter, I am pretty sure I used to get an option for the D1 in Roon to set volume levels with the volume bar in the bottom right area of the interface. Don’t seem to be able to set that any more - I am pretty sure it worked before but maybe someone else with D1 see. I only have Device and Fixed options in the Audio Device settings.
My D1’s volume control in Roon works well by turn on Volume Control in LUMIN APP.
Bingo that was it…I think I just went a bit overboard turning things off in the app.
As it was attached to preamp I didn’t really need it but now at least I can output match when AB checking other DAC’s in the setup.