The Fullerton! This amp is everything the Princeton should have been and more. 2. 12ax7 2. 12at7 preamp section, 4 6v6 power section for a switchable 40 or 20 watts of classic american tone. The layout for this classic beauty is, Volume, 3 band eq to really dial in the tone you need, a tweed knob ( this bypasses the tone stack for some really awesome breakup/early tweed tones. ) A Master tone knob, And Heres the kicker we have crammed SPRING REVERB inside of our head units! This is a 3 knob all tube reverb that is sure to satisfy anyones reverb preference.