Kalamazoo Bass 50 - Main preset

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

The Kalamazoo Bass 50 is the more powerful variant of the Kalamazoo bass amplifier line, offering 50 watts of clean tube power for bass players needing more stage volume. Its circuit shares DNA with Gibson's professional line but simplified for cost-effective manufacturing. The Bass 50 was a practical choice for club bass players of the late 1960s who needed reliable power without the expense of an Ampeg or Fender.

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.