What tubes does the GT Soul-O - Normal use?

The GT Soul-O - Normal uses 3× 12AX7 preamp tubes and 2× EL34 power tubes.

When was the GT Soul-O - Normal produced?

The GT Soul-O - Normal was produced 2000s.

GT Soul-O - Normal preset

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

The GT Soul-O is a boutique amplifier designed by Groove Tubes founder Aspen Pittman, delivering a refined clean tone with British-inflected harmonics from its EL34 output stage. Aimed at session and studio guitarists, the Soul-O rewards a transparent, musical sound that responds dynamically to playing technique. Its clean channel became particularly valued among players who rely on pedals for their driven tones.

Years produced: 2000s
Made in: USA
Wattage: 75W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× EL34

Tags: american, clean, modern.

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.