Try Headroom at www.headphone.com. If you are interested in more stuff headphone-related, go to www.head-fi.org. You'll find reviews of the Clou, Cardas, and Equinox replacement cables for the Senn. hd 580/600.
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?