Marshall Reverb 12 5205 preset

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

The Reverb 12 (5205) is a 12-watt solid-state combo from Marshall's 1980s range, essentially the Lead 12 with spring reverb added. It has op-amp gain stages with gain, three-band EQ and master volume, plus a headphone/direct output.

• Made in: UK
• Wattage: 12W
• Channels: 1

Tags: british, solid-state, reverb, low-wattage, 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.