I have a question about volume control settings for the Concero HP DSD DXD in different pieces of software. I'm using a bunch of different programs (I'm not expecting to keep all these, but exploring and learning for now) - Tidal, Qobuz, Roon (plus RoPieee, sometimes), JRiver, piCorePlayer/LMS/SL (also tried Volumio and VitOS, and I'm streaming via a couple of RPi-4Bs). Gear designers can spend a lot of effort on volume controls so that they don't degrade signal quality. As a matter of optimization, I'd like to be sure as much as possible that the volume control isn't negatively altering playback quality.
The Concero connected directly to a PC is pretty straightforward (such as with Tidal, Qobuz, or JRiver), configured having the device volume control control volume, and the volume control on the front of the Concero works just fine. Turn the volume control on the Concero, and it the slider moves in the software, slide the slider and the volume changes. I'm making a presumption that in this case the Concero volume control is working as designed.
In some software - Roon and piCorePlayer/LMS/SL - there's no configuration option that allows the above to happen; turning the Concero volume control doesn't change the volume/move the software slider. The only way to change volume is to move the playback software slider. This obviously works, and things sound good, but I'm not sure exactly/specifically what/how the volume control is working.
I've seen/read things like this:
"According to Resonessence Labs‘ Mallinson: “Since the Concero HP presents itself as a USB DAC with a hardware volume control, the volume control is passed onto the Concero HP. So to the user, they may think the volume control in OSX is a software one, but that is only the case if the DAC doesn’t support its own hardware volume control.”
Does that mean however I have the volume control configured/specified in the software that the Concero is managing the volume control?
I haven't tried with some software, like PCP/LMS/SL, to choose fixed output, I've only selected to have the player software slider change volume. I've been a little hesitant to select full/fixed output to the Concero. I do send a fixed output to things like my Chord Mojo and Aurender Flow, and of course DACs like my Ares II or Schiit Modi Multibit. And I always select a variable software output for things like the Herus DSD DXD and Meridian Explorer2. Just not quite sure about what's going on with the Concero HP.
Thanks!