Dukane 1A385 preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Dukane 1A385 is a 10-watt American valve PA amplifier from the mid-1950s. Two microphone inputs share the first 12AX7, each with its own level control, and an auxiliary input has its own level; they mix into a second 12AX7 with a single tone control. A 12AU7 phase inverter drives a push-pull pair of 6V6GTs with a 5Y3GT rectifier into a 70-volt and 4-8 ohm output. It was built for institutional sound systems.

• Made in: USA
• Wattage: 10W
• Channels: 1
• Preamp tubes: 2× 12AX7, 1× 12AU7
• Power tubes: 2× 6V6GT

Tags: american, vintage, 6v6, 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.