you should get a usb cleaner if you plan to continue to stream from your computer - that is the source and my bet is that is a source of deleterious noise into the system along with the originating digital signal
otherwise buy a dedicated streamer such as a bluesound node 2i (use it as a good cost effective streamer only, and not as a dac although there is one on board ... it is poor)
then consider outboard dacs... search - there are many threads on good dacs fitting various budgets
otherwise buy a dedicated streamer such as a bluesound node 2i (use it as a good cost effective streamer only, and not as a dac although there is one on board ... it is poor)
then consider outboard dacs... search - there are many threads on good dacs fitting various budgets