What tubes does the Fender Showman Ab568 use?

The Fender Showman Ab568 uses 4× 12AX7, 1× 12AT7 preamp tubes and 2× 6L6 power tubes.

When was the Fender Showman Ab568 produced?

The Fender Showman Ab568 was produced 1968.

Fender Showman Ab568 preset

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

The Showman AB568 is a transitional Showman head at the blackface-to-silverface boundary. At 85 watts with two 6L6 output tubes, this circuit revision marks one of the early silverface cosmetic changes.

Years produced: 1968
Made in: USA
Wattage: 85W
Channels: 2
Preamp tubes: 4× 12AX7, 1× 12AT7
Power tubes: 2× 6L6

Tags: american, clean, silverface, high-wattage, 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.