Used Marshall JMP1 Guitar Preamp

Used Marshall JMP-1 tube guitar preamp in good condition, delivering classic Marshall roar in a compact 1U rack format. Featuring dual 12AX7/ECC83 valves, 100 programmable presets, and four iconic modes (Clean 1, Clean 2, OD 1, OD 2), it covers everything from sparkling cleans to high-gain crunch. MIDI in/thru and a serial effects loop make rig integration easy, while stereo line outputs provide flexible routing for studio or stage.