Audified U73b Compressor

A faithful emulation of the German broadcast compressor/limiter unit U73b. The U73b Compressor is the 2nd generation of the famous plug-in, full of character and unique audio coloring.

“The German Broadcast Legend”

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AAX - AU - VST / MacOS - Windows
About The
Audified U73b Compressor

The original hardware U73b is an all-tube vari-mu compressor/limiter with an adjustable release time option that was often used for mastering between 1960 and 1980.
Audified was first to honor the analog device with its plug-in model, which popularity has been hard to match ever since.

After thorough analysis, Audified has kept the circuit exactly as it was originally designed and came up with a faithful mathematical emulation of the unit.
They added input and output gain (before and right after compressor circuit) to help with proper adjustment of the compression. The plug-in effect has been also supplemented with a VU meter and selectable side-chaining.

How Does Audified U73b Compressor Work?

Working with the U73b Compressor is intuitive.

Compressor/Limiter switch: The upper U73b knob switches between Compressor mode (Kompr), Bypass (Durchschalt) and Limiter mode (Begr). The compressor mode has lower threshold setting and very gentle increasing ratio. Conversely, the limiter mode provides a higher threshold setting with a higher ratio but still with the smooth knee.
Release time: The first three positions offer fixed release time. The other three positions (marked red) provide adjustable program content dependent release time option.
IN: Adjusts input gain before the compressor/limiter circuit
OUT: Adjusts output gain after the compressor/limiter circuit.
Key input: Selects the signal source used for controlling the gain reduction
HPF: U73b is a vintage device and as such it may not meet present mastering demands. As a result, Audified added a bass management button that simply switches between original sound and desired modern sound (without low frequencies bypass).

What People Are Saying About Audified U73b Compressor

I use Audified U73b Compressor on most of my mixes. Magic.

– Dave Pensado

Two of the biggest strengths of the U73b is the way it handles bass (acoustic, electric, etc.) as well as vocals. There’s a lovely top end and clarity that this plugin provides — while at the same time adds roundness and warmth (due to the valve emulation).

– Tony Vincent
Why The Audified U73b Compressor Is Such A Big Deal...
  • Quality and uniqueness of the sound of an unavailable original device.
  • Award-winning plug-in.
  • Precise valve circuit model.
  • Faithful tube sound.
  • External side-chain.
  • Auto Output parameter.
  • Oversampling.
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The Most Wanted German Studio Legends In One Bundle

The "Audified Boutique Studio" bundle contains three plug-ins modeled after popular and widely used analog mixing and mastering hardware units of the early 1960s. Add the U73b Compressor, U78 Saturator and , RZ062 Equalizer to your tool set to get the authentic color of the real and vintage valve circuitry and analog sound!

Get all three plug-ins with a Month-to-Month subscription.
Start and stop whenever you like...

For only $4.99/month!