What kind of volume are you listening to your 580 with? I normally listen at lower volumes then my preferred volume to protect my hearing. Increase/decrease your volume by about 10db for 5 minutes and you can hear a dramatic difference in the amount of bass, and how does EQ affect your soundstage btw? EQ changes the soundstage on my PRO550 completely and everything sounds like they were moved 1 meter behind me.
About the same as I would listen to anything else. After listening more bass is really strong, but not overwhelming, great for drumming. Still need to fiddle with EQ, I'll do that eventually.
There's a subreddit for everything.