Trace Elliot AH250 GP12SMX preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AH250 GP12SMX is a 250-watt Trace Elliot bass head with the GP12SMX preamp: an ECC83 valve input stage, Trace's twelve-band graphic EQ and a dual compressor, driving MOSFET power modules. It delivers the bright, scooped-or-punchy, highly sculptable sound associated with Trace Elliot's green-panel heads.

• Made in: UK
• Wattage: 250W
• Channels: 1
• Preamp tubes: 1× ECC83

Tags: british, bass, hybrid, high-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.