19:21

1979 Marshall JMP 2203 - the 'Bright Cap' revisited!!

18:30

1974 Marshall Super Bass Restoration & Voicing - Part 1

51:06

Health Checkup: 1979 Marshall JMP 50w

33:03

1967 Marshall JMP / JTM45 - RESTORATION PART 1

7:29

Hermansson 5 gain stages rebuild in a Marshall 1959HW

51:21

Marshall JMP Super Bass vs Super Lead - How to convert

46:15

1970 Marshall JMP 50w - RESTORATION PART 1

40:47

1967 Marshall JMP-50 Model 1987 Plexi Lead Amplifier: Tube Rectified and Terrific !!