What tubes does the Fender Princeton B1270 use?

The Fender Princeton B1270 uses 2× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Fender Princeton B1270 produced?

The Fender Princeton B1270 was produced 1967.

Fender Princeton B1270 preset

Close · 70/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Princeton B1270 Schematic documents a transitional Princeton circuit at the end of the blackface era. At 12 watts with two 6V6 output tubes, it represents one of the final blackface Princeton variants.

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

Tags: american, clean, blackface, 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.