So, I got the HD598s recently, and I am really enjoying them...other than one...fairly big aspect. They seem to be missing any bass what-so-ever. The mids and highs are great, but it seems like the bass is so quiet when it should lay down the beat/flow of a song. Now, don't get me wrong here. I'm not one of those "I turn my bass up way past my speakers ability" kids. I just like a clear, audible, kicking bass. But these headphones seem to lack ANY sort of powerful bass, its just...not there at all. Now, I have a nice amp for the headphones, so its not that. The only other thing I can think of is that I don't have them correctly equalized (which I probably don't). So, what are some tips or setups you guys have for equalizing?