By the way I got HD58Xs. I love these. Someone suggested they sound like that first graph. They can go from that, to the second graph, depending on how tight they are on your head.
Two differents graphs for the same pair of headphones.
Warning: Bad seal = bad sound. For the first week, the HD58Xs were really shrill to my ears, and lacked bass/sub-bass. It made no sense, because the bass/sub-bass is already (according to the mass/drop graphs) boosted. But as you can see in the rtings graph … Sorry, it’s not. I went to bed one or two times telling myself “man, Metal571 was right about the grain” . But one day I twisted the metal (not 571) headband a bit to get a better “seal” around my ears. Then, I put the HD58Xs over something to crush the pads overnight (heresy!). Annnd it fixed everything. The bass is there and the highs are not harsh anymore. At all. Just beautiful detail.