Fender Twin Reverb AA769 - Vibrato preset

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

The Twin Reverb AA769 is the 1969 silverface Twin Reverb circuit. Each of its two channels uses a 7025 two-stage preamp with Fender's treble/bass/middle stack and bright switch. It has transformer-driven spring reverb, optical vibrato and four fixed-bias 6L6GC tubes on a silicon rectifier.

• Years produced: 1969–1970
• Made in: USA
• Wattage: 100W
• Channels: 2
• Preamp tubes: 3× 7025, 1× 12AX7, 2× 12AT7
• Power tubes: 4× 6L6GC

Tags: american, vintage, silverface, clean, reverb, vibrato, 6l6.

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.