Marshall 20 Watt Lead Amplifier Model 2022 preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Marshall Model 2022 is a 20W lead guitar amplifier from the JMP era, using EL84 output tubes in a compact chassis suited to rehearsal and studio recording. Its smaller power section delivers earlier breakup than the flagship 100W models at a fraction of the volume.

• Years produced: 1967–1973
• Made in: UK
• Wattage: 20W
• Channels: 1
• Preamp tubes: 2× ECC83
• Power tubes: 2× EL84

Tags: british, vintage, low-watt, practice.

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.