I use Roon with a Roon Server on a Synology and as clients various Mavcs and iPads around my house.
For one Mac I would love to jhave a physical volumne knob which which I can adjust the volumen of teh Roon p;layback. (So not the Mac computer’s Sound volume, but the Roon volume).
I am thinking of something like the Griffin PowerMate. – What do people use? What is hardware is still availble now?