Teisco King preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Teisco King is a 100-watt valve power amplifier from Japan, one of the largest amps Teisco made. A single input with a 50K level control feeds a 12AX7 stage, then a 12AU7 long-tail-pair phase inverter with negative feedback from the speaker. Four 6L6GCs in parallel push-pull run fixed bias with a bias trim, from a solid-state voltage-doubler supply, into an 8-ohm output.

• Made in: Japan
• Wattage: 100W
• Channels: 1
• Preamp tubes: 1× 12AX7, 1× 12AU7
• Power tubes: 4× 6L6GC

Tags: japanese, vintage, 6l6, high-wattage.

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.