What tubes does the Seymour Duncan 100W Conv use?

The Seymour Duncan 100W Conv uses 4× 12AX7 preamp tubes and 4× 6L6 power tubes.

When was the Seymour Duncan 100W Conv produced?

The Seymour Duncan 100W Conv was produced 1984–1991.

Seymour Duncan 100W Conv preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Seymour Duncan 100W Convertible is a two-channel all-tube head featuring a switchable clean/lead topology and a build quality reflecting Seymour Duncan's exacting standards. It is a highly regarded but rarely seen vintage boutique amp from the mid-1980s.

Years produced: 1984–1991
Made in: USA
Wattage: 100W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 4× 6L6

Tags: american, modern, clean, crunch.

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.