Hi Jens, I wanted to let you know how awesome I think the Brown Mod is on the Twin Reverb. I took your speaker recommendations to Weber speakers and had them suggest some options to "cover" the Creamback and V30. I've installed them in the combo cab and they sound awesome with your mods. Lots of grind and punch. Between the Variac, MV, and Gain knob, it's hard to choose among all the sweet spots. I added the Nux Reverb/Delay pedal to the effects loop to give it some dimension and depth. Thanks for your efforts and expertise on this amp. It's a keeper, for sure. You took it from an ebay find, and turned it into a gem.