Ampeg Reverberocket R-12R / R-212R / R-50H preset

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

The Ampeg Reverberocket R-12R, R-212R and R-50H are mid-1990s PCB-built tube amps from Ampeg's St. Louis era. Guitar and Accordion inputs feed a 12AX7-type preamp where relays footswitch between clean and dirty modes, the dirty mode adding a Gain control and extra gain stage, ahead of Treble, Bass, Mid, Volume and Master. A line out, op-amp spring reverb and long-tail inverter feed a fixed-bias pair of octal output valves.

• Made in: USA
• Wattage: 50W
• Channels: 1
• Preamp tubes: 12AX7

Tags: american, reissue, reverb.

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.