Hi, I am currently using audinst hud-mx1 and some apple lossless music as the source. I am planning to upgrade my can from akg k530 to senn hd600. Usually I listen to pop and classical, sometimes maybe jazz and r&b. I have some questions with this upgrade idea and hope anyone has more...

I am considering to upgrade from k530 to k271. My main source will be my Mac Mini. Do I need a DAC/Amp to work with it?

the icon mobile looks good but the sound is always the major issue. anyone has tried the icon mobile with sf5pro or akg530? do they go along well? i am planning to get a dac+amp for these two. ipod classic and my pc will be my sources. usually i use the sf5pro+ipod for outdoor and the...