What tubes does the Fender Vibro-Champ AA764 use?

The Fender Vibro-Champ AA764 uses 2× 12AX7 preamp tubes and 1× 6V6GT power tubes.

When was the Fender Vibro-Champ AA764 produced?

The Fender Vibro-Champ AA764 was produced 1964–1982.

Fender Vibro-Champ AA764 preset

Verified · 94/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Vibro-Champ AA764 is the blackface Champ with tremolo: a single-ended, class-A amp with one 6V6GT and a 5Y3GT rectifier. One 12AX7 handles the signal and a second drives the tremolo oscillator, with bass and treble controls. At low volume it breaks up warmly.

Years produced: 1964–1982
Made in: USA
Wattage: 5W
Channels: 1
Preamp tubes: 2× 12AX7
Power tubes: 1× 6V6GT

Tags: american, vintage, low-wattage, tremolo, 6v6, class-a.

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.