Hi all,   A quick question: is it necessary to upgrade one's USB input into some kind of audiophile USB sound card in order to fully maximum the potential of one's DAC?   I ask because this gentleman here seemed to have done just that (or I suppose, his set-up coincided when he was selected...

Hi all,   New to Head-Fi and new to high-end audio in general.   I recently purchased a pair of Sennheiser HD 800s, but I've got nothing else to support this supposedly magnificent piece of engineering. My purpose is mostly to listen to music and potentially do film sound mixes on my...