What tubes does the Marshall JMP 1930 10W Tremolo use?

The Marshall JMP 1930 10W Tremolo uses solid-state preamp tubes and solid-state power tubes.

When was the Marshall JMP 1930 10W Tremolo produced?

The Marshall JMP 1930 10W Tremolo was produced 1967–1973.

Marshall JMP 1930 10W Tremolo preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Marshall JMP 1930 is a 10W transistor combo with built-in tremolo from the early JMP era, representing one of Marshall's smallest and most unusual practice-oriented products. Its tremolo circuit and small power output set it apart from the flagship valve heads.

Years produced: 1967–1973
Made in: UK
Wattage: 10W
Channels: 1
Preamp tubes: solid-state
Power tubes: solid-state

Tags: practice, vintage, tremolo.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.