Hello @David_Waring — Thank you for the report!
To start, may I kindly ask that you please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
- Have you tried power cycling your Core machine, the NAD, and and networking hardware?
- Can you share a screenshot of your settings for this audio zone in Settings > Audio > Device Setup for that device.
- Have you tried playing to this device outside of Roon?
Regards,
Dylan