We'll see whether I will continue to like these headphones, but assuming that the harshness leaves, there's still a problem that I'm facing, and that's a serious lack of bass and slight brightness. With my schedule and the fact that these things leak a TON of sound, there's no way I can accumulate over 300 hours of burn in on these babies before the 30 day return period; I'll give them about 100 hours, and if they don't sound at least satisfactory, I'll be returning them.
I feel like the biggest problem with these headphones is that they try to be an all around headphone like the k701 but fall short; a jack of all trades yet a master at none. In my opinion, these are just a tad too bright of what I would call neutral, making classical sound almost too lively and fake. For rap and rock, these headphones lack the bass impact needed to make these genres sound good. For Jazz, the lack of bass extention makes hearing much of the low end a major strain. This strain causes me to turn up the volume at a much higher level than I like to.
And these aren't minor problems, but in fact major ones if you ask me. This isn't something that I feel like burn in could fix (of course, I don't know exactly how much 300 hours of burn in will do, I feel like it won't do much more than 50 will but I could be mistaken). Looking at the graphs, it seems that the k701's have more bass than the 601s, which may actually change the sound drastically; after all, my "brightness" complaints may all be there just because of the lack of low end balance.
However, my advice to anyone looking at the k601's would be: go k701 or go home. I wish I had so that I could give AKG's newest offerings a fair shot, seeing as accounts of the 701's vs the 601's state that the 701's improve on everything that the 601's are.
I definately feel like the 601 series in the akg line up will be the ugly duckling that no one will want, much like the SA3000. I was hoping that the 601's were going to voiced in such a way that wouldn't make one crave for the 701's, but I feel like this is not the case at all. Whether the 701 is a much better headphone is unknown to me, but I feel like anyone who owns the 601 will easily spot these issues, particularly in the bass area.