Groove Tubes Trio - Scream preset

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

The Trio is a Groove Tubes rackmount tube preamp with three channels: Clean, Mean and a cascaded high-gain Scream channel, each with its own treble/bass/mid stack and volume. Five 12AX7s run the circuit, with opto-isolated channel switching and a shared output stage with a level control. It has no power amp.

• Made in: USA
• Channels: 3
• Preamp tubes: 5× 12AX7

Tags: american, preamp, multi-channel, high-gain, 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.