Rob Robinette Princeton Reverb Micro (Reverb & Tremolo Deleted) preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

Rob Robinette’s RR1164MD is a one-watt micro blackface Princeton Reverb with both reverb and tremolo deleted. It keeps the reverb load, filter, mix and bright cap, so it sounds like the original with those controls at minimum. A 12AX7 runs the input stage, treble/bass/volume stack and second gain stage, a second 12AX7 adds a gain stage and cathodyne inverter, and a 12AU7 runs true push-pull from a GZ34 rectifier with negative feedback.

• Made in: USA
• Wattage: 1W
• Channels: 1
• Preamp tubes: 2× 12AX7
• Power tubes: 1× 12AU7

Tags: american, diy, blackface, reverb, low-wattage.

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.