Standel PA 7 - Lo Gain preset

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

The Standel PA-7 is a tube PA amplifier from one of the pioneering American amplifier companies, founded by Bob Crooks in California in the early 1950s. Standel was among the first to build high-quality solid-body electric guitar amplifiers and PA systems for the growing country and western music scene.

• Years produced: 1950s–1960s
• Made in: USA
• Channels: 2

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.