The Marshall JMP-1 is a 1U rack-mounted valve MIDI preamp from the early ‘90s, blending classic Marshall tube tones with modern digital control. Using two ECC83 (12AX7) tubes, it delivers four channels: warm Clean 1, bright Clean 2, vintage-crunch OD1, and high-gain OD2. Fully programmable, it stores up to 100 presets with adjustable gain, EQ, and presence, accessible via MIDI or front-panel controls. A stereo effects loop, MIDI mapping, and speaker-emulated outputs enhance its flexibility for stage and studio use. Praised for its versatility and signature Marshall sound, the JMP-1 remains a sought-after tool for players needing programmable tube-driven tone.
Includes manual.
Product Specs
- Item Number: 36718
- Make: Marshall
- Model: JMP-1 Valve MIDI Preamp
- Condition: Very Good
- Finish: Black 'n' Gold
- Categories: amps ⇒ guitar-preamps
- Made In: United Kingdom
- MPN: 36718