409 Opto Compressor


409 provides from gentle, transparent compression to heavy deep-cutting limiting, suitable for a very wide range of applications.

  • Highly optimized dynamic response
  • ‘Damping’ and ‘Skew’ controls
  • Feed-back type compressor/limiter topology
  • Continuously adjustable Ratio control
  • +Panel with extra features


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409 Opto Compressor:

The 409 is a powerful and versatile plugin with highly optimised dynamic response, based on the design and principles of analog Opto Compressors. Characterised by its natural and musical gain reduction, the 409 provides from gentle, transparent compression – to heavy deep-cutting limiting, suitable for a very wide range of applications.

Like its predecessor, 925 Compressor, the 409 Opto Compressor is developed using physical modelling principles recreating classic Optical-element compression characteristics, with a host of extra controls and features.

The main controls enable easy and precise tuning of compression response, with Attack and Release ranges up to 200ms and 787ms respectively. In contrast to fixed-value switch ‘presets’, the Ratio is controlled by a continuously adjustable dial allowing accurate and ‘tunable’ setting of the compression slope.

Complementing its dynamic process, an additional carefully selected set of features allows the user to unveil this unit’s true power.
Sidechain filtering & monitor, Dry/Wet Mix, Peak/RMS detection, Stereo Link, Lookahead, and the specially developed new parameters ‘Damping’ and ‘Skew’ which allow for smoothing and fine-tuning of the detector response, – these controls are what make the 409 truly versatile, providing the user with exceptional control and shaping of the signal’s envelope.

“The 409… is just, WOW ! …
Drums, Vocals, Bass, or an entire mix. This new compressor is my new all-rounder, from loose creamy compression to tight and precise with the extended damping, side-chain filtering, skew, detection algo’s and look-ahead features – Amazing !

Ashley Smith
Mix Engineer / Producer
(Brad Whitford – Aerosmith, Derek St. Holmes, Various Artists)

*Please check requirements on the “Additional Information” tab. This plug-in requires the latest iLok License Manager and an iLok account. Activation and Trial are possible on iLok Cloud or iLok 2nd generation or higher.
iLok is not provided with this purchase.
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Additional information


iLok License Manager and iLok account required
Activation on iLok Cloud or
iLok 2nd generation or higher

Supported Platforms

Windows 7, 8, 10 (64 bit)
MacOS 10.12 or higher (Intel & Apple Silicon)

Supported plug-in hosts

Pro Tools 11+, Logic Pro X, Cubase 5+, REAPER 5+, Ableton Live 9+, Studio One, FL Studio

Supported plug-in formats

AAX (64-bit)
*VST is a registered trademark of Steinberg Media Technologies GmbH