Here I'm comparing two timeless Marshall JMP 50W Lead amps (model 1987): 1970 Small Box Vs 1973 Big Box. These really reproduce two of my all time favorite tones: Ace Frehley (73) and Jimmy Page (70). They both actually most likely used the 100W versions instead (Jimmy 69 Model 1992 and Ace 73 model 1959) , but I think these tones are really close.
Gear:
1970 Marshall Model 1987 Head
1973 Marshall Model 1987 Head
1971 Marshall Model 1982B 4x12
2008 Gibson Les Paul R9