Hello @mark_barry1,
Please provide a brief description of your current setup using this link as a guide.
Just to clarify things, what you’re saying is that you’re able to get the USB output from the ARIES G2 and ARIES Femto to pass audio when using the Lightning DS app for playback, but that when you use Roon to play to the ARIES Femto or ARIES G2 that the connected DACs do not receive the stream?
-John