Sunn 2000S - Normal preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Sunn 2000S is one of the most powerful tube amplifiers of its era, pushing 200 watts through eight 6550s for thunderous low-end reproduction. It became a legendary bass amp associated with the heaviest sounds of early heavy rock and is a cornerstone of the drone and doom scenes today.

• Years produced: 1968–1976
• Made in: USA
• Wattage: 200W
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 8× 6550

Known for: John Paul Jones, Dave Hope.

Tags: american, vintage, clean, bass.

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.