I think it can be made to work, but it may be more complicated than it initially seems. I think the D10s has volume control exposed over the USB interface, but I believe this only affects the analog outputs and not the digital. I also don't know if piCorePlayer will default to using the hardware volume or not, as my USB DACs don't have it. It does let you configure almost everything in the advanced config options though, so at worst you'll need to manually change it to use software volume instead of hardware.@somebodyelse Thanks a lot! I will then continue to use RPI3. I am planning to use picore player and use Qobuz via UPnP rendering from my IPAD. Do you think can I control the entire streaming from my IPAD including volume control?
Since D10s will feed into my Genelec via AES cables, there are also XLR analog cables going into the Genelec. Digital signal is given always priority. Since the RPI 3 will be continuously under power 24x7, how is the best way to ensure no digital signals are send to the Genelecs. One way is to completely switch off Qobuz UPnP rendering from IPAD. Any other ideas?
Also from your experience do you think that something like Allo USB Bridge Signature has better SQ into Topping compared to PI3?
Is there any remote control to power off PI3?
The next potential complication is your LogitechMediaServer settings. The default is to have volume control enabled, but it is possible to disable it. I guess you'd know if you'd done that though. I believe the 8.x version of LMS includes your Qobuz favorites in your collection as if they were locally stored, but haven't tried it. I've not tried Qobuz though - I keep meaning to give it a try.
I've not tried any of the iOS squeezebox remotes, but Squeezer on android allows remote control of volume so I suspect the iOS remotes will behave similarly. I don't remember if you can control the volume of the squeezebox endpoint from a UPnP control point, but it seemed seamless when I tried it a few years back so I suspect you can.
I've never looked at whether piCorePlayer sends digital silence, or just stops sending when it's not playing, or even if it's configurable. If it sends digital silence and can't be reconfigured (which seems unlikely) there may be an option of using custom commands to turn off power to that specific USB port. Cross that bridge if we come to it.
From the documentation of the USBridge I see no reason why it would help the D10s. They use the Modi 2 as an example in their measurements because it's one of the few DACs that's badly enough designed for it to make a difference, but given the price you'd be better off just buying a properly designed DAC. Compare the reviews of the D10s and the Modi 2 and you'll see the former has none of the symptoms that are massively obvious on the latter.
None of the Pi models have remote power off, but you can get 3rd party addons that do, and add custom controls to your piCorePlayer config to use them. Audiophonics have them both as a separate unit and integrated into some of their hats. The Argon ONE case seems to have something similar