JMF Audio Spectra 120 - Channel 2 preset

Close · 68/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The JMF Spectra 120 is a high-powered amplifier from a little-documented manufacturer, offering 120 watts of output across multiple channels. JMF appears to have been a smaller regional or international amp maker whose products are now primarily known through schematic documentation. The Spectra 120 represents the class of powerful professional amplifiers built for large venue use.

Tags: modern.

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.