Following on from the article on the home page about usb cables with ferrites etc the other things worth giving serious consideration to are 1. good quality audio interconnect (RCA) cables for example monster cables etc. I have found this makes a huge difference to the sound on larger systems 2. Mains conditioners for example Tacima CS929 which smooths the current entering your equiptment which also makes a notable difference to sound quality. I have had a couple of problems with crackling and popping while playing on a funktion one system but these steps along with ferrite rings on my data cables had totally sorted the problem out
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