I just finished a batch of profiles for the most infamous Marshall practice amp ever made -- the Lead 12 3005 mini stack with original G10D-25 watt cabs. I have some Pristine, Clean, Crunch, and Distortion using the High and Low channels. I've also included some Liquid ones with the JCM 800 model because that's what Marshall tried to make with the little SS amp anyway. You can download below or from RM.
Note that the clean and some crunch profiles work great with a OD pedal in front. I use a BE-OD.
Please enjoy and Thanks!
LM - Mars Lead 12 and Liquid Profiles.zip
Amp pic
Update: These are clean, crunch, and dimed DI profiles.
LM - Mars Lead 12 Hi and Lo DI profiles.zip
Update: These are two DI profiles using channel 1 and 2 of a BE-OD deluxe pedal in front.
LM - Mars Lead 12 Hi BE-OD DI profiles.zip
Update: These are two DI Liquid profiles (JCM800 model) using the Hi and Low channels of the Lead 12 to guarantee pinch harmonics and feedback heaven which is what Billy Gibbons liked on Eliminator.