Fender Princeton Reverb Bf Ab1270 preset

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

The Princeton Reverb BF AB1270 is a transitional blackface Princeton Reverb circuit revision appearing at the end of the blackface production run. It retains the 12-watt, dual-6V6 character of the AA1164 with minor circuit updates.

• Years produced: 1967
• Made in: USA
• Wattage: 12W
• Channels: 1
• Preamp tubes: 3× 12AX7, 1× 12AT7
• Power tubes: 2× 6V6

Tags: american, clean, blackface, vintage, reverb, tremolo.

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.