National-Dobro 36-6 preset

Close · 65/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The National-Dobro 36-6 was a pre-war tube amplifier from the pioneering National company, intended to accompany lap steel and electric guitars in the earliest days of electrified music. Its simple circuit and low power output gave it a warm, compressed character.

• Years produced: 1936–1942
• Made in: USA
• Channels: 1

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.