What tubes does the Fender Concert Ab763 use?

The Fender Concert Ab763 uses 4× 12AX7, 1× 12AT7 preamp tubes and 2× 6L6GC (plus 1× GZ34 rectifier) power tubes.

When was the Fender Concert Ab763 produced?

The Fender Concert Ab763 was produced 1964–1965.

Fender Concert Ab763 preset

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

The Fender Concert AB763 is the refined blackface production version of the Concert. The AB763 circuit matches the topology of the legendary Super Reverb AB763, with 40 watts, GZ34 rectifier, dual channels, and vibrato across a 4×10 speaker array. The Concert AB763 is a superb example of Fender's golden-era engineering.

Years produced: 1964–1965
Made in: USA
Wattage: 40W
Channels: 2
Preamp tubes: 4× 12AX7, 1× 12AT7
Power tubes: 2× 6L6GC (plus 1× GZ34 rectifier)

Tags: american, clean, 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.