hi, i have no idea what font is that, but it looks like the K and C capitals aren't the same font of the other letters. I think it's something redesigned for that logotype... if you see the S is almost as tall as the T, the T and the D are not in proportion... I don't know, but it looks like something has been modifyed.
PS: i have an ipod case of KC and i see that the logo printed on the rubber band is different: less "thin", different kerning and different S.
ciao!