I got mine yesterday, my brief impression: It is cleaner than HD600, but yes it is drier. don't have the mid-bass hump like HD600 do. It is still very very natural, I think it is even more natural than HD600. But lack some of the lush sounds. The tuning of HD58X is between HD800 and HD600. As a big fan of Sennheiser, I would say it is a very good fit for the price point. It is a "reference" level of headphone. One more thing, because of 150-ohm impedance, it does not scale up like HD600. I really wish they didn't change the old look of HD58x, the new look.....meh..... I will burn in several days then give some updates for it in the future.