Gibson G-10 / G-20 / G-30 preset

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

The Gibson G10, G20 and G30 are 1970s solid-state guitar combos sharing one circuit. Lo and Hi inputs feed a single transistor preamp with volume, treble and bass, then an FET-biased tremolo with intensity, speed and a footswitch, and a quasi-complementary transistor power amp into an 8-ohm speaker. The G20 and G30 add a transistor-driven Type 4 spring reverb with its own control, and the G30 runs higher supply rails than the G10 and G20.

• Channels: 1

Tags: american, vintage, solid-state, clean, reverb, tremolo.

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.