Marshall 25Aniv Silverjubilee 25 50W 2550 preset

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

The Marshall Silver Jubilee 2550 is a switchable 50/100-watt head produced to commemorate Marshall's 25th anniversary in 1987, and represents one of the finest-sounding amplifiers the company ever manufactured. Designed by Tony Spillane, the 2550 features a unique diode-clipped preamp channel alongside a clean channel, producing a cutting, harmonically complex overdrive with exceptional note clarity that sat perfectly in a mix. It became immediately iconic and is associated with the pinnacle of late-1980s British rock and metal tone, appearing on countless landmark records of the era.

Known for: Slash, John Frusciante, Zakk Wylde.

Heard on: Paradise City — Guns N' Roses (1987); Welcome to the Jungle — Guns N' Roses (1987).

Tags: british, crunch.

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.