The "Holy Grail" of Motown Equalization
Rust (Motor EQ) is a faithful recreation of the ultra-rare, all-analog, passive 7-band fixed EQ used in the legendary Motown Studios. Built by Motown’s own engineers in the 1960s, this hardware is responsible for the "soul" of the biggest hits in music history.
Key Features
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Iconic Fixed Bands: Features the classic seven frequency points (50, 130, 320, 800, 2k, 5k, 12.5k Hz) that define the Motown sound—warm, punchy, and incredibly forward.
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Passive Tone Shaping: Since it’s a passive design, the EQ feels exceptionally smooth. Even large boosts sound natural and never harsh.
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Interdependence & Proportional Q: The bands interact with each other in a non-linear way, and the Q-factor narrows as you push the gain, perfectly mimicking the behavior of the original vintage units.
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Added Versatility:
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M/S and L/R Modes: Essential for modern mastering and stereo bus processing.
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High-Quality Preamp: Includes a sampled version of the original makeup gain stage for authentic harmonic saturation.
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Oversampling: Up to 4x oversampling for maximum audio fidelity.
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Pro Tip: Rust is famous for its 800 Hz boost. While most EQs sound "honky" or "nasal" in this range, Rust adds a legendary texture and energy to snares and vocals that just makes them pop out of the speakers.
Company: Acustica Audio