Multivox 1976 Multivox(Maybe) W7591 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This circa-1976 Multivox amplifier, possibly identified as a W7591 model, uses the 7591 output tube common to mid-century American combo amplifiers. Multivox was a New York-based importer and manufacturer that sold instruments and amplifiers under various brand names including Premier. The 7591 tube gives these amps a distinctive warm, mid-forward character typical of late-vintage American designs.

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.