What tubes does the Seymour Duncan Conv2000 Preamp use?

The Seymour Duncan Conv2000 Preamp uses 4× 12AX7 preamp tubes.

When was the Seymour Duncan Conv2000 Preamp produced?

The Seymour Duncan Conv2000 Preamp was produced 1985–1991.

Seymour Duncan Conv2000 Preamp preset

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

The Seymour Duncan Convertible 2000 preamp documents the front-end circuit of this boutique 1980s tube head. Its multi-stage 12AX7 preamp design provided a versatile range from clean to overdrive, characteristic of high-quality American amps of the era.

Years produced: 1985–1991
Made in: USA
Channels: 2
Preamp tubes: 4× 12AX7

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.