Ampeg Reverb Rocket Model R-12-R-T (7868 Version) - Normal preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg Reverb Rocket R-12RT added a tremolo circuit to the Reverb Rocket platform, giving players both spring reverb and tube-driven amplitude modulation in a single 12-inch combo. The tremolo used a dedicated tube circuit to produce smooth, oscillating volume swells that complemented the warm 6V6-driven output stage. This combination of reverb and tremolo made the R-12RT well-suited to the surf, country, and early rock styles of the mid-1960s.

• Years produced: 1964–1967
• Made in: USA
• Wattage: 18W
• Channels: 2
• Preamp tubes: 3× 12AX7, 1× 12AU7
• Power tubes: 2× 6V6GT

Tags: american.

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.