Mesa Boogie Boogie B preset

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

The Mark IIB is the evolutionary successor to the original Mark I, introducing improvements to the gain staging and tonal refinement that further solidified Mesa Boogie's reputation for smooth, musical overdrive. Its voicing retains the compressed sustain and piano-like clarity of the Mark I while offering greater gain depth and improved channel definition. The Mark IIB was a transitional model that bridged the original Boogie concept with the more sophisticated Mark IIC and IIC+ designs that followed.

Known for: Carlos Santana.

Tags: american, crunch, high-gain.

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.