Thanks for the replies guys! I keep the gain pretty much dimed on the lead channels on the 5153 and Uber. Maybe 7-8 sometimes, there isn't much past that point really, just more noise, lol. And yes, I play some pretty heavy s*&t, Carcass and that kinda stuff. I love old Sabbath, old Punk like Discharge, 90's Thrash, Slayer, etc. And I'm old at 48, lol.
The Ultra module when dimed isn't bad, needs maybe 20% more gain if I had to guess. The Ultra XL sounds more like me, maybe this one can be modded to XL specs, I have some electronic experience. The amp sounds a little flubby in the low end dept to my ear, I'm using a tight sounding Bogner closed back 2x12 w/V30's. I read on here about some guys modding the input stage, sounded interesting.
Last, I got this RM100 from a guy that had an endorsement I think. He has another identical one that I can get. It had the 1086 (?) module, silver like mine. I was thinking about trying to get it from him. As you can see on mine, I have the XL, SL+ (not bad, sounds vaguely Marshally), and the Tread Plate. The Tread Plate really blows in my opinion, flubby and not enough gain. Does not sound like a Recto, I have an old 2 channel right here. It is supposed to sound like a Recto, right?
Ethan