Fender Princeton AA964 preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AA964 is the blackface Princeton without reverb: a 1×10 combo with Bass, Treble, Volume and bias-modulating vibrato with Speed and Intensity. One 7025 provides both gain stages; one 12AX7 serves as the split-load phase inverter and the vibrato oscillator. They drive a pair of fixed-bias 6V6GTs on a GZ34 rectifier for about 12 watts, giving sweet cleans and early breakup, and it is a favorite small recording amp.

Tags: american, vintage, blackface, vibrato, 6v6, low-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.