What tubes does the Fender Bassman Ac568 use?

The Fender Bassman Ac568 uses 3× 12AX7 preamp tubes and 2× 6L6GC power tubes.

When was the Fender Bassman Ac568 produced?

The Fender Bassman Ac568 was produced 1968–1969.

Fender Bassman Ac568 preset

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

The Fender Bassman AC568 is the transitional Bassman that arrived with the silverface cosmetic change of 1968. The AC568 circuit is largely derived from the AB165 but represents the beginning of CBS-era component drift. Tonally it remains a capable, clean 50-watt head — less coveted than the blackface models but an honest performer for studio and stage.

Years produced: 1968–1969
Made in: USA
Wattage: 50W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 6L6GC

Tags: american, vintage, clean.

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.