Marshall 1987X Reissue - High Treble preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1987X is Marshall's production reissue of the 50-watt plexi Lead head. It keeps the four-input, two-channel layout with no master volume and two EL34s, built on a circuit board rather than the hand-wired construction of the separate 1987HW model.

• Made in: UK
• Wattage: 50W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 2× EL34

Known for: Robin Trower, Kurt Ballou, Paul Gilbert.

Tags: british, reissue, plexi, crunch, el34, mid-wattage, 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.