I got them the other day, and the bass definitely had no impact. The bass is there, and well defined, but like I said it didn't have any punch, that's probably due to the open design, though I was expecting at least a decent amount of bass. The headphones will probably take a little while to burn in aswell, maybe as they get more use the bass will improve slightly, I'm not betting too much on this though. I'm not even a bass head either. The lack of bass is probably more overwhelming for me since I listen to a lot of trance. I heard about the lack of bass, but I didn't think it would be this lacking. As you've probably have heard everything else is pretty great about these, and they are great for gaming. Sort of regretting not getting the DT 990's, but then again they are $100 more, and I would need an amp with them most likely, which would cost even more. I'll probably need to get an amp regardless. Is there any way for me to remedy the bass for the HD 598's, for example with an amp? Do any amps go well with these? I don't want to spend a whole lot of money on them either.