Fender Vibro-Champ AA764 - Instruments preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Fender Vibro-Champ AA764 is the blackface-era Champ with an added tremolo circuit, delivering 5W through a single 6V6 power tube in a single-ended configuration. Like the standard Champ, it produces warm, touch-sensitive breakup at low volumes, but with the added musicality of Fender's smooth optical tremolo. A beloved small recording amp that remained in production through the silverface era.

Tags: american, crunch, 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.