Garnet G250TR Sessionman - Ultra Brite preset

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

The G250TR Sessionman is a mid-1970s all-valve head from Garnet of Winnipeg, with reverb and tremolo. Channel 1 has two inputs, treble, bass and volume with a bright switch; Channel 2 adds a mids control with its own treble, bass, volume and bright switch. A 12AX7 drives the reverb with a footswitch, a 12AX7 tremolo has intensity and a pull slow-speed switch, and a 12AX7 phase splitter drives two 6CA7/EL34s on a silicon-diode supply with a 2.5 H choke.

Tags: canadian, vintage, hybrid, reverb, tremolo, high-wattage, two-channel.

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.