Here’s a quick pic of some Marshall JMP-1 preamps in for servicing. These units belong to Phil Collen of Def Leppard & came in for some TLC, Capjob, Retubes & new Batteries (to retain settings) as well as to make all the units sound as cohesive as possible with one another. These units are headed out on Def Leppard’s 2016 Summer Tour with Tesla & Reo Speedwagon!