What tubes does the Ampeg R-12A Rocket - Channel 3 use?

The Ampeg R-12A Rocket - Channel 3 uses 2× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Ampeg R-12A Rocket - Channel 3 produced?

The Ampeg R-12A Rocket - Channel 3 was produced 1958–1962.

Ampeg R-12A Rocket - Channel 3 preset

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

The R-12A Rocket is an early variant of the Rocket series with minor circuit differences from the standard R-12. Channel 1 delivers warm 6V6 tone typical of late-1950s American amp design. The A suffix may indicate a cosmetic or circuit revision made during the model's production run.

Years produced: 1958–1962
Made in: USA
Wattage: 12W
Channels: 2
Preamp tubes: 2× 12AX7
Power tubes: 2× 6V6

Tags: guitar, american, vintage, low-wattage, 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.