What tubes does the Fender Bassman70 use?

The Fender Bassman70 uses 3× 12AX7 preamp tubes and 2× 6L6 power tubes.

When was the Fender Bassman70 produced?

The Fender Bassman70 was produced 1977–1983.

Fender Bassman70 preset

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

The Fender Bassman 70 is the silverface-era evolution of Fender's most historically significant amp line - a 70-watt head (upgraded from the earlier Bassman 50 via Fender's new ultra-linear transformers) delivering powerful, headroom-rich clean tones that remain eminently musical. Originally aimed at bass players but quickly adopted by guitarists, it has a full-bodied, warm Fender character that doesn't compress early, making it ideal for players who need volume without breakup. It's a natural choice for country, blues, and roots players who want that classic American voice with a little more headroom.

Years produced: 1977–1983
Made in: USA
Wattage: 70W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 6L6

Tags: american, vintage, clean.

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.