Fender Princeton Reverb AA1164 preset

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

The AA1164 Princeton Reverb is the blackface Princeton with reverb and vibrato, a single-channel combo with two inputs, volume, treble and bass. A 12AT7 drives the spring reverb and half a 12AX7 recovers it, while another 12AX7 half runs a bias-modulating vibrato with speed and intensity, both pedal-switchable. A 12AX7 paraphase inverter drives a fixed-bias pair of 6V6GTs from a 5U4GB rectifier. Its sweet clean tone, smooth early breakup and deep reverb at low volume made it a favorite recording amp.

• Years produced: 1964–1967
• Made in: USA
• Wattage: 12W
• Channels: 1
• Preamp tubes: 3× 12AX7, 1× 12AT7
• Power tubes: 2× 6V6GT

Known for: Jim Campilongo, Carl Verheyen, Jonathan Wilson, Daniel Donato.

Heard on: The Way I Feel — Jonathan Wilson (2011).

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

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.