Mesa Boogie Basis M-2000 - Tube preset

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

The Basis M-2000 is Mesa/Boogie's hybrid bass head. It has two preamp channels: a Vacuum Tube channel with two 12AX7s and a solid-state Field Effect channel. Each has its own graphic EQ, and the two can be blended. The 600 W MOSFET power section gives it plenty of clean headroom, while the tube channel adds warmth and grit.

• Made in: USA
• Wattage: 600W
• Channels: 2
• Preamp tubes: 2× 12AX7

Tags: american, modern, bass, hybrid, high-wattage, two-channel.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.