Fender Bronco AA764 preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Bronco is Fender's student amp built on the Vibro Champ circuit: a single-ended 6V6 in class A, a 12AX7 preamp and a second 12AX7 for vibrato, with a tube rectifier. At about 5 watts it breaks up into warm overdrive at low volume.

• Made in: USA
• Wattage: 5W
• Channels: 1
• Preamp tubes: 2× 12AX7
• Power tubes: 1× 6V6GT

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

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.