Marshall Super Lead 1959 (1967) - High Treble preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1967 Marshall 100-watt amplifier (drawn as 'Type #2, c.1967') is the plexi-era Super Lead layout: two channels of two inputs each share the first ECC83, then a gain stage and cathode follower drive a treble, bass and middle stack. An ECC83 long-tailed-pair inverter with presence drives four fixed-bias output valves from a solid-state bridge and choke. With no master volume it is played loud for its raw, harmonically rich crunch.

• Years produced: 1965–1967
• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 4× EL34

Known for: Jimi Hendrix.

Tags: british, vintage, plexi, el34, high-wattage, crunch, two-channel.

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.