PerForming jazz with these is probably not a good idea. By about 150-200hrs the highs and mids are near their "finished" point. The lows start comming into what they r at or by this point too. However it took another aprox 150hrs to achieve top condition. At this point it isnt bass shy per see. The bass is actually ove neutral to put an emphasis if u listen to pop or hi hop. But not enough to overpower when listening to rock. Im a mainstream boy. I listen to nockelback , linkin park, pendulum, evanescense, skillet , sixx am, lil wayne, drake , rhinana, katy perry, lady gaga, jason derulo. And they have all played admirably on the shures. However they r very neutral sounding and ive begun to meed tome fun to them sso i got ultrasones
I fully got these burned in a while ago so the only number i can give u approx for final sound quality would be approx 300+hrs
Edited by bowei006 - 12/5/11 at 3:50am