Earth Sound Research Stage Master PA-2000 preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Earth Sound Research Stage Master PA-2000 is a valve PA head. It has four identical input channels, each with bass, middle, treble and volume on 7025 (12AX7) stages. It also has spring reverb, an echo send and return, and a four-band Master Frequency Attenuator. A 12AT7 inverter drives four 6L6s. There are recording and slave outputs.

• Made in: USA
• Channels: 1
• Preamp tubes: 7× 12AX7, 2× 12AT7
• Power tubes: 4× 6L6

Tags: american, vintage, 6l6, reverb.

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.