So I'm in the middle of adding music to my iTunes library and I noticed the "Sample Rate" is 44.100 on most of my songs. Does this have any relation to the frequency response/range that headphones have? I'd just like to be educated in this topic, so that I can have optimal sound quality. Thanks...

Hello guys/gals, new member here. This is my first post actually :-) I was wondering if I could get an owners perspective and impressions on the headphones in the Title above. (Audio Technica ATH-A900X) I was wondering what you're thoughts on sound quality are, dynamics and such. I've read that...