Gibson Duo Medalist - Normal preset

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

The Duo Medalist is a 1968 Gibson 1×12 combo of about 25 watts with Normal and Reverb channels, each with its own bass, treble and volume. 6EU7 preamp stages feed a 12AU7 spring-reverb driver and recovery and a photocell tremolo with speed and depth. A 12AX7 voltage amp and split-load inverter then drive a pair of fixed-bias 7591 output tubes on a solid-state supply.

• Made in: USA
• Wattage: 25W
• Channels: 2
• Preamp tubes: 3× 6EU7, 2× 12AU7A, 1× 12AX7A
• Power tubes: 2× 7591

Tags: american, vintage, clean, reverb, tremolo, 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.