What tubes does the Gibson GA Custom - Channel 2 use?

The Gibson GA Custom - Channel 2 uses 4× 12AX7 preamp tubes and 4× 6L6 power tubes.

When was the Gibson GA Custom - Channel 2 produced?

The Gibson GA Custom - Channel 2 was produced 1963–1967.

Gibson GA Custom - Channel 2 preset

Close · 78/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Gibson GA Custom was Gibson's top-of-the-line amp offering, featuring an expanded control set and premium construction. It delivered warm, powerful American clean tones with onboard effects suited to the most demanding professional applications.

Years produced: 1963–1967
Made in: US
Wattage: 35W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 4× 6L6

Tags: american, vintage, 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.