Rob Robinette RR763 BlackVibe Micro preset

Verified · 95/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The RR763M BlackVibe Micro is Rob Robinette’s low-power, single-channel take on the blackface AB763 Vibroverb, with no reverb or tremolo. High and low inputs feed a 12AX7 stage, a blackface treble/bass/mid stack with volume, and a second 12AX7 stage. A 12AT7 long-tail inverter with presence, followed by a master volume, drives both halves of a 12AU7 as push-pull output triodes into a Hammond 125B, on a GZ34 rectifier with backup diodes.

• Made in: USA
• Channels: 1
• Preamp tubes: 1× 12AX7, 1× 12AT7
• Power tubes: 1× 12AU7

Tags: american, diy, clean, blackface, 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.