[quote name='Bill Fitzmaurice' timestamp='1467550257' post='3084453']
+1. And it's probably not louder per se, the difference is likely attributable to different gain structures.
[/quote] definitely louder as I owned 3 MB heads at one point & spent hours A/B ing them The MB mrk3 & Little Rocker were a lot louder than the 800w head regardless of what you did with the EQ . Interestingly there was very little difference between the 250w mo mark & the 500w heads , based on getting the same tone . As for all the technical talk I don't have a clue , as long as it does what I've paid it to do .