Gretsch 6163 - Channel 1 preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Gretsch G6163 is a Valco-built piggyback amp, separate preamp and power pack. Two channels, three inputs each, run on 12AX7 stages with their own volume, treble and bass controls. A 12AX7 tremolo has speed and intensity with a footswitch, and a built-in tuner tone oscillator has frequency, volume and on/off controls, plus a brilliance switch. A 12AX7 inverter feeds the power pack: a cathode-biased push-pull pair of 6L6s on a 5U4 rectifier.

• Made in: USA
• Channels: 2
• Preamp tubes: 6× 12AX7
• Power tubes: 2× 6L6

Tags: american, vintage, 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.