couldn’t agree more it should be noted I did have a volume leveling turned on in Roon which would most certainly be the reason why there is a difference in volume but I don’t think that affects my listening test as I did match the output.. I got the same post going on the Roon forum may want to check into that for some responses. lumin is awesome but the app is far cry from Roon from a user interface standpoint obviously
spl meter would be ideal,, but don’t have one and not that serious about it.