REQ: Softube Widener

It's wide, it's narrow, it's stereo
Widener is effective on both mono and stereo sources. Turn mono into stereo to make your sound cut through the mix. Or use it to expand your mix as an alternative to other effects that might clutter the sound, like reverb or delay. Do this with the certainty that your sound will stay mono-compatible when using the Frequency Spread or Classic algorithm. In stereo, you can carefully widen the sound to enhance the three-dimensional space of your mix and create a sense of depth or you can make it narrower to bring focus to the mix. Widener doesn't only widen a mix, its crossfeed algorithms can also be used to create a more natural and cohesive sound image during the mastering phase.
Five wide options & two visual aids
Each mix is distinctive and comes with diverse challenges and necessities. Using stereo width to enhance your mix might produce artifacts you'll want to consider. That's why we included no less than five different algorithms: Classic, Frequency Spread, Rotation, Ambience, and Reflections. Each algorithm has a unique strength, which allows you to find the sweet spot for your stereo image and minimize those unwanted artifacts.

In short, the different algorithms use phase shifting, Mid/Side processing, or reverberation techniques to accomplish their sound. The goniometer and correlation meter provide real-time information about the stereo width and allow you to avoid pitfalls by confirming what you hear. Which empowers you to make the right choices for your mix.