Peavey Vulcan preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Peavey Vulcan is an early-1970s solid-state Peavey amp for bass and PA use, sharing its preamp with the Musician and Dyna Bass of the same era. A single input feeds a discrete transistor preamp with a Volume control and an LDR (light-dependent resistor) stage driven from a separate control circuit, then two 50K tone controls for bass and treble. A fully transistorised quasi-complementary power amp with paralleled output devices runs on +/-40 V rails.

• Made in: USA
• Channels: 1

Tags: american, vintage, solid-state, bass.

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.