What tubes does the Marshall Lead20 20W 5002 use?

The Marshall Lead20 20W 5002 uses Solid-state preamp tubes and Solid-state power tubes.

When was the Marshall Lead20 20W 5002 produced?

The Marshall Lead20 20W 5002 was produced 1981–1985.

Marshall Lead20 20W 5002 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Marshall Lead 20 (model 5002) is a 20W solid-state combo amplifier from the early JCM800 era, designed to bring Marshall's gain voicing to players who needed a lightweight and affordable practice or rehearsal amp. Its solid-state circuit captures some of the midrange presence and bite of its valve siblings without the cost or maintenance overhead, making it a practical option for younger players and working musicians on a tight budget. The Lead 20 was part of a broader Marshall strategy to widen market reach beyond the premium valve head segment.

Years produced: 1981–1985
Made in: UK
Wattage: 20W
Channels: 1
Preamp tubes: Solid-state
Power tubes: Solid-state

Tags: british, crunch, high-gain.

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.