So my beloved and faithful Superlux (Frankenluxs) HD668's are on their last legs, I've replaced the cable twice, resoldered both drivers more times than I can remember and now I think it's time I finnaly let them die. As for the replacements, I bought a used pair of AKG K702's for a pretty decent price, they should be here some time next week, I was wondering what I should expect from these headphones. From what I've read online they have a pretty flat sound signature which is personally what I prefer but I was wondering if I could get the impressions of those who've owned them in terms of build quality and sound detail. I'm guessing these are going to be a huge step up from my humble Frankenluxs. Said Frankenluxs, aren't they glorious?