Sennheiser and Clou cables for HD580s?

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.

Sonically, there are two replacement cables (Cardas and Equinox) that are superior to the Clou, and way superior to the stock cables. Also, both are much more flexible, mechanically, to the Clou (with an edge in this department to the Equinox).

Personally, I like the Cardas - and it's the one I bought. It's a little more extended treble than the Equinox... but the difference between the two is distinctly smaller than the similarities, relative to the other choices.

Good luck and good hunting...

If you can solder make one yourself. Several microphone cables to choos from - Kloz, Belden, Mogami, Canare etc. I personally like the mogami and dislike the belden.