Marshall 100W 3210 MOSFET - Boost preset

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

The Marshall 3210 is a hybrid Lead 100 MOSFET head that combines a solid-state MOSFET power section with a tube preamp stage, giving it a distinctive character that sits between pure tube warmth and solid-state punch. Designed during Marshall's exploration of MOSFET technology in the 1980s, the 3210 offered players a more affordable route into Marshall tone with the reliability of solid-state power. Its overdriven sound is tight and aggressive, making it popular on the mid-1980s metal and hard rock scene.

• Years produced: 1984–1991
• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 3× ECC83 (12AX7)
• Power tubes: 4× EL34

Known for: Jeff Beck.

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.