Rob Robinette RR763R BlackVibe Reverb preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The RR763R BlackVibe Reverb is Rob Robinette's DIY build of the blackface AB763 Vibroverb's vibrato channel with the reverb kept and the tremolo circuit deleted. It runs 12AX7 gain stages, a 12AT7 reverb driver and 12AT7 long-tail phase inverter into two 6L6GC power tubes with a GZ34 rectifier, for roughly 40 watts of blackface clean tone with spring reverb.

• Made in: USA
• Wattage: 40W
• Channels: 1
• Preamp tubes: 2× 12AX7, 2× 12AT7
• Power tubes: 2× 6L6GC

Tags: diy, american, blackface, clean, reverb, 6l6, mid-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.