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First Time Retube | Bias Marshall JMP 50 MK 2 Plexi Amp
Marshall 1987x 50 Watt Plexi Retube and Bias Amp Repair EL34 Tubes
How to Bias Marshall JMP 100W Super Lead Guitar Amplifier
Secrets of the Marshall JMP 2204 Master Model 50W Mk2 Lead Head - The PERFECT Marshall Amp!
Marshall Lead 50 MK II : repair and service of a classic amp with an uncommon, crazy modification.
How to install Master Volume Marshall Super Lead Plexi easy method without removing circuit board
1970 Marshall JMP 50w - RESTORATION PART 2
1970 Marshall JMP 50w - RESTORATION PART 1
Don't buy these 3 Marshall amps | Marshall amp review
Repair and Rebuild : Marshall JMP model 1987 50W - Part 1
Inside a $10K Amp | Secrets of the 1967 Marshall JTM50 BLACK FLAG Plexi | REPAIR & DEMO
Lets Build a Small Box Marshall Plexi 50W Amplifier (by Modulus Amplification)
