Onhwy61, it's just my well forgotten electrical engeneering education - I moved to a computer programming right away, but it still sits somewhere on a background... :)
CD player doesn't have fans, megahertz buses, usually has well isolated power supplies, less circuitry, boards, contacts... I absolutely agree with you that sound cards designed with professional requirements in mind may eliminate most of the problems. But I'm doubt that typical consumer-oriented sound card that (as I saw on forums) usually used for this purpose, was designed with sound quality in first place.
CD player doesn't have fans, megahertz buses, usually has well isolated power supplies, less circuitry, boards, contacts... I absolutely agree with you that sound cards designed with professional requirements in mind may eliminate most of the problems. But I'm doubt that typical consumer-oriented sound card that (as I saw on forums) usually used for this purpose, was designed with sound quality in first place.