> I guess UAC1 doesn't need feedback endpoints, right? Seems like that > should be something specific to UAC2. At least for now. It seems like it is needed there aswell, see http://www.usb.org/developers/docs/devclass_docs/audio10.pdf (3.7.2.2) (Feedback endpoint == Synch Endpoint) Regards /R ��.n��������+%������w��{.n�����{���)��jg��������ݢj����G�������j:+v���w�m������w�������h�����٥