What tubes does the Garnet Gs100R Jammer use?

The Garnet Gs100R Jammer uses 12AX7, 12AX7 preamp tubes and EL34, EL34, EL34, EL34 power tubes.

When was the Garnet Gs100R Jammer produced?

The Garnet Gs100R Jammer was produced 1969–1975.

Garnet Gs100R Jammer preset

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

The Garnet Jammer GS100R is a 100-watt Canadian tube head with onboard reverb, built for the professional guitarist who demanded a self-contained, high-powered solution. The 'Jammer' name positioned it as a player's working tool rather than a boutique collectible. Garnet's construction quality during this period was high, using robust transformers and point-to-point wiring that has allowed many examples to survive decades of service.

Years produced: 1969–1975
Made in: Canada
Wattage: 100W
Channels: 2
Preamp tubes: 12AX7, 12AX7
Power tubes: EL34, EL34, EL34, EL34

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.