What tubes does the Fender 140 use?

The Fender 140 uses 4× 12AX7 preamp tubes and 4× 6L6 power tubes.

When was the Fender 140 produced?

The Fender 140 was produced 1978–1982.

Fender 140 preset

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

The Fender 140 is a late silverface-era head delivering 140 watts through four 6L6 output tubes. Designed for high-powered stage use at the end of the CBS era, it offers massive clean headroom and Fender's American tonal signature scaled up for larger venues.

Years produced: 1978–1982
Made in: USA
Wattage: 140W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 4× 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.