Music Man 2475-65 / 2275-65 - Channel 1 preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 2475-65 and 2275-65 are 65-watt, two-channel Music Man amps. They have op-amp preamps with bass/mid/treble and bright switches (the 2275 omits mid and bright), spring reverb, transistor tremolo, master volume and a Deep switch. A pair of 6CA7/EL34 output tubes is driven by a 12AX7 inverter in early versions and by transistors later.

• Made in: USA
• Wattage: 65W
• Channels: 2
• Power tubes: 2× 6CA7

Tags: american, vintage, hybrid, clean, reverb, tremolo, el34.

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.