Multivox Model 45 7591 Circa1977 78 preset
Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.
The Multivox Model 45 is a late-1970s tube combo using the 7591 output tube, one of the final tube amplifier designs from Multivox before solid-state designs became dominant. Its 7591-based circuit delivers a warm, mid-forward tone characteristic of American tube amps from this transitional era. The Model 45 represents the tail end of Multivox's tube amplifier production before the company's eventual decline.
- Years produced: 1977–1978
- Made in: USA
- Channels: 1
- Power tubes: 2× 7591
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.