The most nuetral Amp I have had is the Morrison ELAD. Unfortunately, I learned that I preferred a tube preamp that colors the sound a bit. The problem with pure neutral sound is that you ultimately get the sound quality of the recording. And there's a lot of crappy engineering sound out there. A tube preamp imparts some warmth to everything and in my opinion is easier to live with. You can also change sound based on tube swapping. Something you can't do to a SS Preamp.
