@metaldetektor Hi the USB for DSD is absolutely wonderful there is a very small difference between AES/EBU and USB for PCM and I will not be able to make my final conclusions until maybe another 2-3 weeks from now when the Musetec should be fully burned in.
AFAIK I can't re-clock the USB because there's nothing that I know of that has a USB input and output, so I may try re-clocking the AES/EBU with a Mutec and see if it makes a difference. I've tried the Grimm re-clockers and compared to the Mutec they sound exaggerated. YMMV.
As far as streaming is concerned I've listened to the Aurender N20 and N30 in hi-end systems and they both are very,very capable but since I know my music collection mostly off by heart I prefer to listen to ripped.