What tubes does the Fender Twin Reverb AC568 - Vibrato use?

The Fender Twin Reverb AC568 - Vibrato uses 4× 12AX7, 1× 12AT7 preamp tubes and 4× 6L6 power tubes.

When was the Fender Twin Reverb AC568 - Vibrato produced?

The Fender Twin Reverb AC568 - Vibrato was produced 1968.

Fender Twin Reverb AC568 - Vibrato preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Fender Twin Reverb AC568 is a transitional model applying the AC568 circuit revision to the Twin Reverb, bridging the blackface and silverface design periods. It delivers approximately 100W through four 6L6 tubes with spring reverb and vibrato, tonally close to the blackface Twin Reverb.

Years produced: 1968
Made in: USA
Wattage: 100W
Channels: 2
Preamp tubes: 4× 12AX7, 1× 12AT7
Power tubes: 4× 6L6

Tags: american, clean, 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.