The reason I formulated the question the way it is : I don't want to waist time with salesman at Sound by Singer or Stereo-exchange. I want to listen to 2-3 amps an form my opinion.
So far after listening to Krell, YBA, and MF A3 I can say that most gear is pathetically skewered to please average ears. YBA does that better than most but it is still nowhere near as honest as amp could be.
I don't want to hear smoothed treble or beefed bass I want to hear minimally altered sound. The actual sound from the source not some old dude's idea of the sound.
Most amps I heard sound like some old dude's ideas, and not like music.