What tubes does the Gibson Thor Bass Amp - Normal use?

The Gibson Thor Bass Amp - Normal uses 3× 12AX7 preamp tubes and 4× 6L6 power tubes.

When was the Gibson Thor Bass Amp - Normal produced?

The Gibson Thor Bass Amp - Normal was produced 1962–1967.

Gibson Thor Bass Amp - Normal preset

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

The Gibson Thor Bass Amp was one of Gibson's dedicated bass amplifiers, designed to provide full, warm low-end reinforcement for electric bass. Its powerful output stage and bass-voiced tone controls made it effective for the bass players who appeared alongside Gibson-endorsed guitarists.

Years produced: 1962–1967
Made in: US
Wattage: 50W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 4× 6L6

Tags: american, vintage, bass.

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.