Fender Vibroverb AB763 - Normal preset

Verified · 93/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Fender Vibroverb AB763 is a rare and collectible blackface combo that replaced the brownface 6G16 Vibroverb, delivering approximately 40W through a single 15" or 2×10" speaker with Fender's signature spring reverb and vibrato. Only produced for a brief period in 1963–1964, it is one of the most sought-after Fender combos, associated with Stevie Ray Vaughan who used a 1963 Vibroverb as his primary amp for much of his career.

• 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, 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.