Alesis QuadraVerb Plus - Main preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Alesis QuadraVerb Plus is an enhanced version of the original QuadraVerb digital multi-effects processor, adding a built-in 3-band EQ and additional algorithm options. Alesis's QuadraVerb line defined affordable professional digital effects processing in the early 1990s. The Plus model offered improved flexibility over the original while maintaining the same competitive price point.

• Years produced: 1990–1996
• Made in: USA

Tags: american, modern, solid-state.

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.