What tubes does the Fender Twin-Amp 5F8 use?

The Fender Twin-Amp 5F8 uses 1× 12AY7, 2× 12AX7 preamp tubes and 4× 5881 power tubes.

When was the Fender Twin-Amp 5F8 produced?

The Fender Twin-Amp 5F8 was produced 1957–1958.

Fender Twin-Amp 5F8 preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 5F8 is the high-powered tweed Twin: four 5881 output tubes making about 80 watts, fed by an '83 mercury-vapor rectifier. Bright and Normal channels share presence, middle, bass and treble controls, a more complete tone section than earlier tweed Twins.

Years produced: 1957–1958
Made in: USA
Wattage: 80W
Channels: 2
Preamp tubes: 1× 12AY7, 2× 12AX7
Power tubes: 4× 5881

Tags: american, vintage, tweed, clean, high-wattage, 6l6.

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.