Gibson Mercury Medalist - Tremolo preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Mercury Medalist is a 1960s two-channel Gibson combo, each channel with loudness, bass, midrange and treble controls. A 6EU7 phase-shift oscillator and a 6C4 lamp driver run a photocell (LDR) tremolo on channel 1, with frequency, depth and a foot pedal. A 6EU7 gain stage and a 6FQ7 long-tail inverter drive a fixed-bias push-pull pair of 6L6GC tubes, with an OA2 regulator, through a crossover into 15-inch and 10-inch speakers.

• Made in: USA
• Channels: 2
• Preamp tubes: 3× 6EU7, 1× 6C4, 1× 6FQ7
• Power tubes: 2× 6L6GC

Tags: american, vintage, clean, tremolo, 6l6, 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.