Mesa's Dual Rectifier is the BOMB!...and then some
The Dual Rectifier is absolutely gorgeous (imaginably)in the hands of players like Eric Johnson, Robben Ford, Larry Carlton, Allan Holdswoth, Eddie Van Halen... who've developed a level of playing where they want to derive more tonal variations based on instant dyanmics changes from picking strenght, muting and position and type of pick across the strings.
Understandably not something for everyone but when the sweetspot of pre and power tubes and the eqs are adjusted just right, with the help of drive pedals (eg. eq, compressor, od, dist or fuzz)the rectifier tubes will react to the players touch in an almost organic way. This is because (rectifiers) are supplying the voltage juice to the entire circuit and especaially the Power Tube section and when you slam at the strings the rectifiers will create an almost "cushioned" effect usually described as "sag" but really instead of getting louder it just sounds more saturated and mid rangy thick but when you gliss the pick or fingers over the strings the tone is glassier.
No pedal in my experience then or now has yet to faithfully replicate this phenomenon of full tube amps especially those with Tube Rectifiers.
....now if only H&K could provide the tube rectifier/silicon rectifier option to their Triamp Mk II....i could quite possibly be much happier person for a much longer time! Yeah right dream on!
Hahahahahahaha!
So fellas describe ur dream amp! Come on!