I have e-mailed everyone I know that makes aftermarket cables for the HD580/600's, Cardas, Clou, etc..... Even Sennheiser! None of them are willing to give up a few of these connectors, saying that the connectors are molded directly to the cables and pins, or that they have some kind of "contract agreement" with Sennheiser to not sell these to any "third parties".
I was thinking if I could get my hands on some of those pin connectors, I could have James Hess, of (Magwires), make some cables for the Sennheisers.
In fact, he has a pair of HD580's that needs the stock cable replaced. When I mentioned this to him, he was very interested and is willing to make the cables, only if we can find some way of getting those stinking connectors.
You know, I read else-where in this forum about Zu Cables making their own cable for the Senns, and that they had so many problems working with the stock connectors that they were in the process of making their own connectors.
Maybe if we all get together and ask the guys at Zu Cables, they will be willing to sell their connectors to us DIY'ers.
It couldn't hurt, right?!