National-Dobro Model 60 - Main preset

Close · 78/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The National-Dobro Model 60 is a vintage American tube amplifier from National-Dobro, the Chicago-based company that made resonator guitars before World War II. National-Dobro produced some of the earliest electric guitar amplifiers in the mid-1930s as the electric guitar market emerged. These pre-war amplifiers are extremely rare historical artifacts representing the dawn of electric guitar amplification.

• Years produced: 1935–1943
• Made in: USA
• Channels: 1

Tags: american, vintage.

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.