Earth Sound Research Stage Master PA-2000 - Ch 1 preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Earth Sound Research Stage Master PA-2000 was a professional solid-state PA amplifier aimed at the emerging touring and live concert market of the 1970s. It provided high output power with multiple channels for comprehensive front-of-house sound reinforcement.

• Years produced: 1973–1979
• Made in: USA
• Wattage: 200W

Tags: american, solid-state, 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.