Fender Bandmaster Reverb AA768 - Normal preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AA768 is the first Bandmaster Reverb head, from 1968. Normal and Vibrato channels each have two inputs, bass, treble, volume and a bright switch, and the Vibrato channel adds a middle control, 12AT7-driven spring reverb and optical vibrato with speed, intensity and a pedal. A 12AT7 long-tail inverter drives a pair of 6L6GCs from a GZ34 rectifier into a 4-ohm load, giving clear Fender clean tone with reverb and vibrato.

• Made in: USA
• Wattage: 45W
• Channels: 2
• Preamp tubes: 3× 7025, 1× 12AX7, 2× 12AT7
• Power tubes: 2× 6L6GC

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

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.