Rust 2

Name: Rust 2
Price: 73.81 USD
Author: Acustica Audio

by Acustica Audio · EQ · Passive 7-band EQ

Not rated yet

Rust 2 is a passive 7-band EQ inspired by a rare 1960s unit built by Motown engineers, with NOVA-powered saturation.

It has Vintage and Modern preamp modes and mid-side processing, and costs €65 (about $73.81) on sale, regularly €149.

Best for: Vocals, Drums, Bass, Guitars, Keys & Synths, Mix Bus. Genres: R&B & Soul, Pop, Rock & Indie.

Keywords: low latency, mid/side, vintage, 60s, bass, drums, vocals, analog-sounding, mixing, tracking, zero-latency, Apple Silicon native, beta, bus processing, classic, clean, full mix, inspired by, mix bus, sampled hardware, static, stereo-linked.

What it does

Rust 2 recreates an ultra-rare 1960s Motown passive 7-band EQ, heard on records by Stevie Wonder, Marvin Gaye, Diana Ross and The Jackson 5. Version 2 adds a new preamp stage, aiming for "classic analog tone with dynamic harmonic control".

Fixed bands: seven passive bands at 50 Hz, 130 Hz, 320 Hz, 800 Hz, 2 kHz, 5 kHz and 12.5 kHz, with proportional Q and natural interaction between bands.
Dual preamp: Vintage for richer harmonic color and Modern for cleaner shaping. Saturation is driven by the input level.
NOVA engine: Acustica's hybrid of Volterra kernel sampling and neural modeling for the analog stages.
Mono, stereo and M/S: separate mono and stereo plugins, with left/right and mid-side processing and flexible channel linking.
Zero Latency version: a ZL build for tracking and real-time use.
Extended view: a real-time EQ curve and an input signal scope.
NOVA GPU (beta): GPU processing on Windows and Apple Silicon Macs.

It works at 44.1 to 96 kHz. The store showed a sale price when checked. Owners of the original Rust get upgrade codes, and owners of Yellow, Ruby 3 or Salt 2 get crossgrade codes. The product page does not mention a demo.

Source: Acustica Audio product page

When to use it

Rust 2 differs in layout from most rated character EQs, which are tube designs with a few boost and cut controls, such as the Pultec Passive EQ Collection and PuigTec EQs, best for broad lows and highs, and Manley Massive Passive, a flexible mastering EQ. Like Mäag Audio EQ4 it is fixed-band, but EQ4 is known mainly for its Air band, while Rust 2 has seven fixed bands spread across the spectrum, closer to a small graphic EQ with analog color. That makes it quick for broad tone moves on single tracks and buses, with the preamp adding as much or as little saturation as the input level asks for. It is not a surgical tool, since the bands can't be moved.

Best for: fast, broad tone shaping with vintage soul character on vocals, drums, bass and buses.
Genres: soul, R&B, Motown-style pop, rock and hip-hop built on vintage samples.
Look elsewhere if: you need sweepable or narrow bands (Pro-Q 4 or TDR Nova) or a classic Pultec-style low-end boost (Pultec Passive EQ Collection).
Tip: use the Zero Latency version while tracking, and switch to the full version for mixing.

Where to buy

Acustica Audio: $73.81 (regular $169.19) (€65 (regular €149) converted to USD (ECB rate, 29 Sep 2026))

Tutorials and reviews

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