u73b Compressor
"Comeback of a broadcast legend"
Faithful emulation of the German broadcast compressor/limiter unit U73b.
Software product, electronic download, immediate delivery.
Exact model of valve circuits
Uses iLok protection system. The USB dongle is not required. More info
Plug-in in AAX, Audio Unit and VST format compatible with all major audio workstations
This effect offers advanced calibration (headroom adjustment) - the relation between the digital and analog levels.
Compatible with MacOS and Windows

Comeback of a broadcast legend

The plugin recreation of a unique-sounding and rare hardware unit. Bring the unique analog character to your tracks.

Dream of every producer

Original u73b was and still is used in many recording studios around the globe. The motivation to bring this legendary unit into the modern world is to provide this exceptional unit to a new generation of producers and audio engineers. Our plugin recreation captures the magic and analog character perfectly. u73b is a fantastic producer's compressor, providing inspiring sound and intuitive workflow. 


Compressor/Limiter switch – switches between Compressor, Bypass and Limiter modes. The compressor mode has a lower threshold setting and a very gentle ratio. The limiter mode provides a higher threshold setting with a higher ratio.

Release time – the first three positions offer fixed release time, the other three provide adjustable release time options.

IN  – adjust input gain before the compressor/limiter circuit

OUT  – adjust output gain after the compressor/limiter circuit.

Key input  – selects the signal source used for controlling the gain reduction

HPF – switches between the vintage and modern sound without low frequencies bypass.

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For more technical specifications and workflow tips, please refer to user manual here.

Technical info

System requirements of the selected product. For some effects and applications, we have versions compatible with older systems. Please visit the Downloads page and browse the available versions if your system is older than specified here.

Mac OS X 10.11 - macOS 12
AAX 64b, AU 64b, VST3 64b, Apple Silicon Native
Windows 7 - Windows 11
AAX 64b, VST3 32b, VST3 64b

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