Really enjoying these, as others have said, they definitely have a clamp factor but I'm confident it'll lessen over time. Aside from that they are pretty comfortable; it could just be the clamping but at the moment it feels like the sides of my ears are touching the drivers slightly, but again that could clear up. They are way lighter than I expected so there is no real pressure on the top of your head. I actually wanted to find out how light these were so I weighed them and they weigh nothing. Literally 0 in every unit of measurement.
Other minuses that have been mentioned are the very long cable, which most people will find to be entering the realm of absurdity. To the poor reviewer whose cable got tangled up in the wheels of their chair until they threw the headphones at a wall in rage; thank you, you've inspired me to coil the cable and tie it up so it's effectively 1.5 metres rather than 300.
I'm not much of an audiophile, but I've been making s***ty electronic music in my bedroom for the past two years so I know a little bit about sounds and stuff. These sound really fantastic to my ear, although my only comparison points are consumer grade in ear headphones and a pair of Marley Liberate XL's so keep that in mind. The XL's are pretty good but they lean noticeably towards lower frequencies, having Marley's signature warm, bassy sound. These on the other hand are supposed to be neutral so I was worried that with my electronic tendencies there wouldn't be enough bass to satisfy me. Strangely that is not the case at all, the bass doesn't sound much quieter than my Marley's, it's punchier and a hundred times more detailed.
As a little side note, the fact that the bass didn't disappoint me lends a little weight to the man who said these had very bloated bass. I don't have a pair of headphones that I know are fully neutral so I can't say for myself whether the bass is actually bloated, however I can say that the bass never feels overpowering and doesn't smother the mids or highs, all frequencies sound incredibly detailed to me, especially the highs. In fact, the highs are a tad harsh in certain songs with particularly harsh percussion, I've mainly experienced this with trap and haven't had any issues with jazz, rock or old school hip hop,– only electronic music.
On the note of highs I haven't heard any noticeable sibilance excepting during "Heartbreak" by Yelawolf.
They aren't particularly portable, but I sort of like the purity of the fact that don't really do anything except play music. No in line mic or controls, no bells or whistles just good music, which is a pretty beautiful approach and embodied by a very beautiful pair of headphones. These look absolutely stunning, despite the fact that the materials look (and probably are, given the price) cheap. I'll definitely be keeping AKG in mind for future purchases on account of their appearanc alone.
I think that pretty much sums up this review. I like these a lot and have been primarily listening to music over the past couple of days to hear all of the details I missed before, everything sounds so much clearer and more alive than before. Would definitely recommend these cans :)