That's 24ga Neotech UP-OCC copper. I wanted to try it vs. the 22ga that I used on Ryan's cable. It is a bit more flexible and perhaps more importantly (for the postjack acceptance factor) not flesh toned. Wow, that's crazy, I don't think I've ever seen a Stefan cable before. [edit] I take that back, I just hadn't seen their K1K cables before. But, given that they state they're using OCC copper it's highly likely that this is in fact a very similar cable. And I guess that Vicki can feel like she got a pretty good deal since the 10' K1K cable w/ 1/4" termination runs $349 and the similar Senn cable $319.