www.headphone.com has excellent service. I ran into the same problem with my 580's. I purchased clou cable red jaspis'. The good news is that they are very tough, well constructed, and do sound noticeably better. The bad news is that the cable is considerably larger (about 3/8" thick), bright red, and a little stiff. A worthwhile upgrade overall.
Sennheiser and Clou cables for HD580s?
My HD580s were the victims of an unfortunate vacuum cleaner incident. Anyone know where to get a replacement cable? Does Sennheiser have a US website (the one I found was in the Fatherland, and in German). As long as I'm buying cable anyway, I might try Clou. Anyone got a lead for them?