Music Man 2475-75 / 2275-75 - Channel 1 preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 2475-75 and 2275-75 are 75-watt, two-channel Music Man amps on the GB-2 board. Each channel has an op-amp input with bass/mid/treble, a bright switch and a soft limiter. They add dual master volumes, spring reverb, a two-stage optical phaser and a Deep switch. Transistor drivers cathode-drive a pair of 6L6GC output tubes.

• Made in: USA
• Wattage: 75W
• Channels: 2
• Power tubes: 2× 6L6GC

Tags: american, vintage, hybrid, clean, reverb, 6l6.

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.