What tubes does the Music Man 2100 B use?

The Music Man 2100 B uses 2× 12AX7 preamp tubes.

When was the Music Man 2100 B produced?

The Music Man 2100 B was produced 1974–1982.

Music Man 2100 B preset

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

The Music Man 2100-B was a high-powered bass combo using the 2100 chassis with bass-voiced tone shaping, offering clean, articulate bass amplification for professional players. Its hybrid circuit ensured both warmth and reliability for demanding stage applications.

Years produced: 1974–1982
Made in: US
Wattage: 130W
Channels: 2
Preamp tubes: 2× 12AX7

Tags: american, vintage, bass, clean.

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.