Marshall MOSFET 100W 3210 - Boost preset

Close · 72/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Marshall MOSFET 100 (model 3210) is a 100W solid-state head built around MOSFET output transistors, part of Marshall's 1980s effort to produce a high-output solid-state head that could compete tonally with valve alternatives. Its two-channel layout covers clean and drive tones, and the MOSFET output stage is credited with a smoother, less harsh character than contemporaneous bipolar designs. The 3210 was a professional-grade gigging head that offered reliability and consistency on the road, and it gained a modest following among players who preferred the predictability of solid-state power.

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.