Marshall Lead 100 Mosfet 3210 - Boost preset

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

The 3210 is a 100-watt solid-state head from Marshall's mid-1980s MOSFET range. A single input feeds op-amp preamps for a Normal channel and a footswitchable Boost channel with LED clipping and its own gain, switched by a CA3046 transistor array with indicator LED. Treble, Middle and Bass, spring reverb with its own level, an effects send/return and a DI output follow, into a MOSFET power stage running off ±49 V rails.

• Made in: UK
• Wattage: 100W
• Channels: 2

Tags: british, solid-state, high-wattage, two-channel.

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.