I did not read any marketing language, everything I said was accurate . As to the reason they used them to begin with, you may be right, I did not look up the history, but the end result was an amp that is prized for the exact reasons I mentioned and I do happen to know that the evolution of the twin reverb was always for a loud clean signal that did not break up until you turned it up very very loud. Perhaps I should have said "Clean" headroom to appease the semantic gods. And by the way, both of your name dropped amp designers talk in length about tube rectifier sag, the compression and the loss of headroom, and how that actually defines the great amps that used them and also the ones that use diodes instead. In fact I bet there are a lot of metal players that prefer a solid state over a tube amp for precisely this reason. Most of them get their tone through pedals that push amps with huge clean overhead volume that does not sag. And that amp does look pretty nice.. Hand wired means you can use your books to easily mod it :) Its a one trick pony for sure, but its the one trick I want to look pretty in my living room when I just want to have some fun on my guitar.