I don't, nor to a really believe that there are two unique versions of the K340s. Do different ones sound different, sure, but I'm not sure it's a black and white difference. Also, I don't think that mine has any sort of screen mod done and the highs sound fine to me, of course I lean toward the Senn side of the spectrum so that may just be my preference. I'll try to take some decent pics this weekend and post them up.