Color BOX Amp PLEXI Marshall’s DNA, Rebuilt in Reaktor’s Core
Description:
Color BOX’s Amp PLEXI is a handcrafted collection of guitar amplifier simulators built natively for Native Instruments Reaktor 6, authored with the kind of circuit-level obsession you’d expect from a boutique amp builder — not a software house. This isn’t a preset pack or an IR loader. It’s a set of fully realized amp models constructed from the ground up inside Reaktor’s Core environment, where the actual electronic behavior of the circuit lives.
The Amp_PLEXI collection covers three of the most historically significant British amplifier circuits ever produced:
Amp_J-800 — modeled on the Marshall JCM800 (circuits 2204 and 2203), the backbone of hard rock and metal for four decades
Amp_PLEXI-SLP — based on the Marshall Super Lead Plexi (1987 and 1959), the raw, harmonically rich foundation of classic rock tone
Amp_PLEXI-45 — derived from the Marshall JTM45, the earliest Marshall design and one of the most revered British amplifier circuits ever made
What makes Amp PLEXI exceptional isn’t just what it sounds like — it’s how deep you can go. For those familiar with Fractal Audio processors, the workflow will feel immediately familiar: you’re not locked into fixed parameters. At the Core level, you can swap out component values, substitute tube and speaker models, or restructure the circuit topology itself. It’s a living amp model — not a snapshot of one.
This X1 release represents an improved version over the standard offline build, with additional refinements and a full user manual included. As noted by the author, the rutracker giveaway builds are consistently the most current, with ongoing revisions across the Color BOX collection.
If you want to feel the difference between a 2203 and a 1987 circuit at the component level — inside your DAW, inside Reaktor — this is where that conversation starts.
Format: ENS (Reaktor Ensemble)
Requires: Native Instruments Reaktor 6 (Full version)
Platform: x64
Color BOX – Amp PLEXI (Reaktor FX Library)
Publisher: Color BOX
Version: X1
Release Date: April 12, 2026
Category: VST Plugins & Sound Libraries
Format: ENS (Reaktor Ensemble)
Platform Requirement: Native Instruments Reaktor v6.5.0+
License: Full version
Download Size: 19.4 MB
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