Leslie Type 100GK Power Amplifier preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Type 100GK is a Leslie four-channel tube power amplifier for organ tone cabinets. It is an organ amp, not a guitar amp. Each of its four identical channels, which feed separate organ divisions (Pedal, C, C# and Tibia), uses a 12AU7 driver and a push-pull pair of 7189 tubes, for eight 7189s in total, with a solid-state power supply.

• Made in: USA
• Channels: 1
• Preamp tubes: 4× 12AU7
• Power tubes: 8× 7189

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.