Fender Vibroverb Aa763 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Vibroverb AA763 is the blackface version of the iconic Vibroverb, featuring the AB763 circuit with onboard reverb and vibrato in the 1×15 cabinet. Its combination of warm reverb, vibrato, and 15-inch speaker gives it a distinctive character that made it beloved by blues players.

• Years produced: 1963–1964
• Made in: USA
• Wattage: 40W
• Channels: 2
• Preamp tubes: 4× 12AX7, 1× 12AT7
• Power tubes: 2× 6L6

Known for: Stevie Ray Vaughan.

Tags: american, clean, blackface, reverb, vibrato, vintage.

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.