I would probably use GLM for volume control. But something like the SMSL PO100/Douk U2 can do volume control too and give me a transparent digital output with either the Genelec SAM speakers or Neumann DSP range. On a non-Genelec GLM/Neumann DSP system I would be using a MiniDSP Flex, which can control the volume, I think?
You are correct - but something about the double conversion of the digital signal bothers me, even if there's no discernible audio quality difference.
Good idea, I should at least listen to the Genelecs and Neumanns. Where will let me do this in Melbourne, Australia - I don't know.
30 cubic meter room, listening distance 1m - 3m away, which means the 8320A is more than suitable according to Genelec's chart