Following below are the list and timing for when I would like my new headphones including budget and what I will will be listening to and for the amount of time they need to be able to handle being comfortable for listening to the items listed.   Timing This also is for my next build which...

I wanted to known what headphones to buy for under 600 that are closed , I need good bass and oversound as my music taste is very large.In addition I would like to known if an asus xonar soundcard is good and if  I need a DAC, In addition please make sure there close as I live with a few people...