Hi Tang
I needed 10 metre cables to make the necessary changes, so you are right it’s is expensive. However in te context of a system which may have cost many thousands of pounds it may be a small price to pay. Unless you use very exotic cables in which case it may be a non starter. Regarding your comment about RFI, in my experience that is more important with interconnects particulaly those around the record deck. I borrowed a set of long LS cables from a friendly local dealers to test the theory and bodged a mains supply enough to check it out. It is certainly not easy to do but it is very worthwhile.
Good luck whatever you decide
Kind regards
David
Hi David, just a short read for your/anyone consideration:
? http://www.empiricalaudio.com/computer-audio/audio-faqs/short-versus-long-cables