What tubes does the Fender Bassman 5A6 - Main use?

The Fender Bassman 5A6 - Main uses 2× 12AY7 preamp tubes and 2× 6L6 power tubes.

When was the Fender Bassman 5A6 - Main produced?

The Fender Bassman 5A6 - Main was produced 1952–1954.

Fender Bassman 5A6 - Main preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Bassman 5A6 is an early tweed-era bass amp that quickly found favor with guitarists. Its simple cathode-biased circuit, lacquered tweed cabinet, and 2×12-inch speaker configuration produce warm, harmonically rich tones that break up naturally at moderate volumes — establishing the sonic blueprint that would influence countless amp designs.

Years produced: 1952–1954
Made in: USA
Wattage: 26W
Channels: 2
Preamp tubes: 2× 12AY7
Power tubes: 2× 6L6

Tags: american, tweed, vintage, clean, breakup.

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.