Marshall Marshall1959M2 preset

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

The Marshall 1959 Mark II is an updated version of the Super Lead 100W plexi circuit, retaining the four-EL34 topology with minor revisions for improved reliability and consistency. It maintains the same raw, dynamic character of the original plexi while addressing some early-production quirks.

• Years produced: 1967–1973
• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 4× ECC83
• Power tubes: 4× EL34

Heard on: All Along the Watchtower — Jimi Hendrix (1968); Won't Get Fooled Again — The Who (1971).

Tags: british, plexi, vintage, mark-ii.

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.