Knowknothing...GREAT QUESTIONS. I would love to know some of there answers as well. For me the sound has almost always been digital. When I was a kid my dad had a cheapo Magnavox stack...my only exposure to records. I didn't really get into the whole stereo thing until this decade, so all of this maturation of stereo sound came well before I was aware...the DAC I am use now came out before I entered Highschool.