The Marshall JMP-1 is an iconic Marshall tube preamps with MIDI, 128 available presets and stereo outputs.
He's with me since more than 20 years and, unlike me, it hasn't aged a day !
It's always a pleasure to use and it covers any kind of past and present "Marshall kind of sound"
This photo was taken before starting the Tonex V2 captures and Hotone SoundClones, during a tube swap and general check/clean. It's loaded with TAD RT030 12ax7-cz.