What tubes does the Fender Twinreverb Sf 100 Mv Noboost use?

The Fender Twinreverb Sf 100 Mv Noboost uses 5× 12AX7 preamp tubes and 4× 6L6GC power tubes.

When was the Fender Twinreverb Sf 100 Mv Noboost produced?

The Fender Twinreverb Sf 100 Mv Noboost was produced 1972–1977.

Fender Twinreverb Sf 100 Mv Noboost preset

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

This schematic documents the silverface Twin Reverb in the 100-watt, master volume, no-boost configuration from approximately the mid-1970s. The master volume feature was added to silverface Twins around 1972, allowing players to achieve some preamp saturation while controlling overall output level. The "no-boost" variant omits the pull-boost switches that many players found tonally unflattering, resulting in a slightly cleaner signal path. This schematic is a useful reference for understanding the various silverface Twin Reverb configurations of the 1970s.

Years produced: 1972–1977
Made in: USA
Wattage: 100W
Channels: 2
Preamp tubes: 5× 12AX7
Power tubes: 4× 6L6GC

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.