Marshall 1974X - Normal preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

Marshall's hand-wired reissue of the 1966 18-watt 1974 combo. It has two channels, Normal and Tremolo, each with its own pair of inputs and simple Tone and Volume controls; the Tremolo channel adds Speed and Intensity and a footswitch jack. Three ECC83s cover the preamps, tremolo oscillator and phase inverter, driving two EL84s off an EZ81 valve rectifier, for the chimey, early-breakup British tone of the original.

• Years produced: 2004–present
• Made in: UK
• Wattage: 18W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 2× EL84

Known for: Micki Free.

Tags: british, reissue, hand-wired, el84, tremolo, crunch, low-wattage.

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.