Marshall JMP Specialist 25W 2046 - Normal preset

Close · 65/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Marshall 2046 Specialist 25W was a lower-wattage head designed for situations requiring less stage volume than the standard 50W and 100W JMP heads. Its 25W output through a pair of EL34s positions it between practice and full stage use, and its simpler circuit relative to the flagship Super Lead gives it a more direct, less complex character. The Specialist series was not widely exported and remains relatively obscure outside the UK, making it a collector's piece for those interested in the breadth of Marshall's domestic product range during the JMP era.

Tags: british, vintage, 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.