Howdy! I was thinking about buying some good headphones for use with my new iMac (was planning on buying one when the 2012 model comes out, whenever that will be...). Something along the lines of the AKG K701 maybe. Would it be possile for me to connect the headphones to an iMac and get decent audio quality out of the box, or would I maybe need to buy a headphone amp? Or are the headphones I'm looking at overkill?