Mesa Boogie Mk I Reissue preset

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

The Mark I Reissue faithfully recreates the original 1971 Boogie — the amp that started it all. A single-channel design with cascaded gain stages, it delivers the warm, singing lead tone that defined the boutique American amp sound and made Carlos Santana famous.

• Years produced: 1999–2008
• Made in: USA
• Wattage: 100W
• Channels: 1
• Preamp tubes: 4× 12AX7
• Power tubes: 4× 6L6

Known for: Carlos Santana.

Heard on: Evil Ways — Carlos Santana (1969).

Tags: american, vintage, boutique, mark-series, reissue.

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.