Hi, please forgive my ignorance. A couple of weeks ago I purchased the Gardo PS1000e along with the OPPO HA-1 DAC/AMP. Now I'm a beginner and I don't know a lot of tech stuff but what do I feed this thing? I mean what is the source of music that is to go the amp then to the headphones? Where do I store my HD music? is there s specific player for lossless music that is connected to the amp? I know it has a USB input for connecting it to a computer but what are my other options? I know there are portable players to store HD Audio in them like DAPs (Astell & Kern, iBasso etc) but those are all portable, is there a non-portable option? And do these portable players connect to my OPPO HA-1? Thanks. P.S. I have over 2000 CDs, how do I make use of them given my new equipment (e.g. ripping or some other means?).