What tubes does the Ampeg GS-12R - Normal use?

The Ampeg GS-12R - Normal uses 3× 12AX7 preamp tubes and 2× 6L6 power tubes.

When was the Ampeg GS-12R - Normal produced?

The Ampeg GS-12R - Normal was produced 1963–1967.

Ampeg GS-12R - Normal preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg GS-12R Reverb Rocket II was a mid-1960s guitar combo combining Ampeg's Rocket-series format with built-in tube reverb. The addition of reverb made the Reverb Rocket series highly appealing to guitarists of the era, when spring reverb was essential for surf, country, and pop styles. The 6L6-powered circuit delivered clean, warm American tones that broke up pleasingly when pushed, while the built-in reverb added the spatial depth that defined 1960s guitar sounds.

Years produced: 1963–1967
Made in: USA
Wattage: 20W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 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.