Dukane 1A475 - Mic 4 preset

Close · 74/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Dukane 1A475 is a tube power amplifier from Dukane's professional PA line, designed for institutional and commercial audio installations. It delivers a clean, neutral character appropriate for speech reinforcement and background music in large buildings. Dukane built these amplifiers to military-grade reliability standards, and many units remained in service for decades.

• Years produced: 1960s
• Made in: US
• Channels: 1

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.