Value of a preamp?

@carlsbad2 . I concur. It shouldn't change the sound.

@dynalead. Yes. Where would phono be w/o preamplifier.

I particularly enjoy the dealer (salespersons) comments; kind of like the old Absolute Sound to which I subscribed and enjoyed :) . Now I prefer amirm - just the facts - as best that human can avoid personal bias - which I think "they" do a pretty good job of. ( I'm thinking a language professor might cringe at my grammar :)  I'm reminded now of the Beach Boys hit, Fun,Fun,Fun  :)

@cey. I agree systems sound better. I understand designers aim for the elusive straight wire w gain; however, exciting colorations must account for many findings :)

@hilde45 . Love your description- it's all "artifactual".  :)

Appreciate the input. Would love to know of someone who is exceptional at upgrading preamps as well as repairs.