My current setup: Desire HD (EQed crap out of it - esp bass and mids, volume set permamently just below DAC clipping / peak limit caused by EQ, somewhere at the half) + FiiO E6 (with red/blue EQ depending on the mood) to finish the job and get high volume with no distortions + JVC S600's I could archieve similiar bass levels even without an amp, but that would be at the too much of a cost of music clarity. I want ear sucking (literally) bass with decent mids/highs and that's what I'am getting right now Now why do I need those XB500's? They would be for exact same purpose like mine S600's (warm closed hp's) and possibly won't sound better, and they are more expensive (~70$ in my local store, it's almost as much as E6 and JVC combined) BUT, as it's discontinued already, this could be my last chance to get those legendary cans, and as I heard they do EQ well (?), and it's sound signature should be quite unique as well. what do YOU think, is it worth getting those tyres?