Hello @Achim_Kowalski ,
Thanks for reaching out and welcome to the forum! I am looking over our device database and I do not see this Weiss as being Roon Tested. Since the device is on USB, it shouldn’t have any issues with connectivity, it just not being there means we didn’t test the specific device capabilities, but otherwise it should work. I’l forward your report to the team to see if we can get one in for testing, but even if you leave the device as unidentified it will be ok. Hope this helps!