I am following this thread from day 1 and recall having read from a well informed reviewer that a driver to allow for multichannel or DSD via USB is in the work.
Any update on this ?
Should this happen, I will be able to use JRiver MC18 to its full power and use room correction, the so called 'convolution' and any plug-ins added.
That will also allow for bass mangement at the source and avoid later sound treatment.
Dunno about the USB input but you can do multichannel via ethernet although not DSD (yet).