Paul, there lies the crux, some of us subjectives, don't really care the reasons behind why some things do what they do, we are just happy that they do it, If I understood it all, I'd build my own.

As to not interested in hifi, you are correct, my interest lies in music, that's what the hifi is for, I don't really to much about the mechanics, except perhaps the basics, but why should i need to know when my music sounds so good. And all my testing has been subjective using only my ears and brain.