What tubes does the Guild J100 use?

The Guild J100 uses 12AX7 preamp tubes and 6L6 power tubes.

When was the Guild J100 produced?

The Guild J100 was produced 1965–1970.

Guild J100 preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Guild J100 is a high-powered tube amplifier head from the mid-to-late 1960s, rated at approximately 100 watts and intended for demanding stage use. Guild designed this amp to satisfy the growing volume requirements of the rock era while retaining the clean, articulate character the brand was known for. Its robust construction and high output made it a credible alternative to the period's dominant American and British competitors.

Years produced: 1965–1970
Made in: US
Wattage: 100W
Channels: 2
Preamp tubes: 12AX7
Power tubes: 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.