Charles1dad you are 100% right. When I search for a pre (or any component for that matter) I don't say OK it has to have A or B or C. Yes I first think tubes and have had more tube amps than most normal people have had cars and the same goes for pre-amps. But I've now landed with a SS pre and never inquired about it's design just plugged it in and knew it was special once heard. Still have not found a SS amp I could live with for the long run but that doesn't mean it's not out there, have yet to hear some of the new Nelson Pass designs.