I run Roon on a Mac mini, into a Lumin U1 (then directly into my DAC then Power Amp, without pre-Amp), and configured the Roon Volume Control on the Lumin U1 as “Device Volume” to set volume with Lumin’s Leedh Processing implementation. When I check the signal path (which is otherwise qualified “Lossless”), it is now qualified as “High Quality”.
Would love to understand why? When Roon is configured to perform some Volume Leveling, it qualifies the signal to “Enhanced”? Why not do the same for Lumin’s Leedh Processing volume leveling?