What tubes does the Fender Twin-Amp 6G8 - Vibrato use?

The Fender Twin-Amp 6G8 - Vibrato uses 4× 12AX7, 2× 12AT7 preamp tubes and 4× 6L6 power tubes.

When was the Fender Twin-Amp 6G8 - Vibrato produced?

The Fender Twin-Amp 6G8 - Vibrato was produced 1961–1963.

Fender Twin-Amp 6G8 - Vibrato preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Twin 6G8 is a brownface-era Twin delivering 85 watts through four 6L6 output tubes and two 12-inch speakers. A transitional model before the blackface era, it features the brown Tolex cosmetics and 6G-series circuit of the brownface period, with slightly warmer, less scooped tone than the later blackface Twin.

Years produced: 1961–1963
Made in: USA
Wattage: 85W
Channels: 2
Preamp tubes: 4× 12AX7, 2× 12AT7
Power tubes: 4× 6L6

Tags: american, clean, brownface, vintage, high-wattage.

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.