Sure you can run 6L6 in the Badlander. I feel the Badlander sounds way better with the EL34. More grind less fizzy. I did a poorly done video comparing the BAD with 6L6 STR440 to the MWDR with stock tubes. As it seems, the BAD has a thinner tone when running the 6L6 tubes. It actually sounds much better with the EL34 but lacks the bolstered midrange that many would associate with an EL34 based amp. Most of the low end of the Rectifier is associated with the cold clipper circuit. Bad has that too but uses a different cathode resistor so the sub harmonic content is not there. Perhaps that is why most have no interest in it if they are after that true Rectifier sound. the video below did not have good balance in the mic setup or levels.@bandit2013 Thanks for your input! I think I may end up looking for a traditional Recto 412 to accompany my Soldano V30 412. I can't get past how great this cab sounds with all my Rectos ( Single, RoV &, Rev G ). I'm assuming it's going to be just as good if not better! IDK though - this Soldano V30 412 absolutely RIPS.
In regards to the Badlander 50 vs 100, I'm curious. However, really wish the 6L6 was there! I know that has deterred some folks.
I have Series 1 Singles and RoVs. They absolutely can hold their own against my Rev G. Get the right EQ/OD set-up with the right cab/speakers and that's all it takes ( a good player too of course!).