Gretsch 6151 preset

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

The Gretsch G6151 is a Valco-built student combo with Regular and Treble inputs feeding both halves of a 12AX7, followed by tone and volume controls. A single-ended, cathode-biased 6V6GT drives one speaker, and a 5Y3GT rectifier supplies the power, for a few watts. A second 12AX7 runs a phase-shift tremolo that modulates the first stage, with a speed control, an on/off switch on the speed pot, and a footswitch jack.

• Made in: USA
• Wattage: 5W
• Channels: 1
• Preamp tubes: 2× 12AX7
• Power tubes: 1× 6V6GT

Tags: american, vintage.

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.