Sunn Model T - Normal preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Sunn Model T is perhaps the most celebrated Sunn amplifier, a 120-watt tube head with a unique preamp circuit capable of gritty, harmonically dense overdrive. It has become foundational in doom metal and heavy psychedelic music, and Fender produced a reissue due to its enduring popularity.

• Years produced: 1973–1979
• Made in: USA
• Wattage: 120W
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 4× 6550

Known for: Earth, Boris, Ty Segall.

Tags: american, 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.