Trace Elliot GP12X Pre-Amp preset

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

The GP12X is a Trace Elliot rack-mount bass preamp built around the company's graphic-EQ GP12 design. It adds an ECC83 valve stage and a built-in compressor to the solid-state signal path. It has no power amp and is meant to feed a separate power amp.

• Made in: UK
• Channels: 1
• Preamp tubes: 1× ECC83

Tags: british, bass, preamp, hybrid.

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.