What tubes does the Gibson Duo Medalist A use?

The Gibson Duo Medalist A uses 2× 12AX7 preamp tubes and 2× 6BQ5 power tubes.

When was the Gibson Duo Medalist A produced?

The Gibson Duo Medalist A was produced 1962–1966.

Gibson Duo Medalist A preset

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

The Gibson Duo Medalist A is a mid-1960s two-channel combo amplifier from Gibson's Medalist line, designed to offer separate inputs for two players or instruments. Using a pair of 6BQ5 (EL84) output tubes, the Duo Medalist A produces a bright, chimey tone that contrasts with Gibson's typical 6V6 warmth — a nod to the British amp sound that was becoming popular during the Beat era. It delivers clean headroom and modest crunch at bedroom-to-rehearsal volumes.

Years produced: 1962–1966
Made in: USA
Wattage: 20W
Channels: 2
Preamp tubes: 2× 12AX7
Power tubes: 2× 6BQ5

Tags: american, vintage, clean.

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.