Any free stereo width plugins to recommend?

[skankhunt42]

Appreciate all the replies you generous people.
Looks like the only problem I'll be facing is being spoiled for choice!

[Krakatau]

depend on workflow. for instance flux stereo tool can be quite detailed but IMO less intuitive than ozone imager, for instance

[jimmydeer]

I'll recommend against one–izotope is terrible for mono compatibility. I love their products otherwise but use anything else for stereo width

[heavymetalmixer]

Stereo Helper, iZotope Ozone Imager, Alex Hilton A1StereoControl, the one in the Dead Duck bundle (I don't remember its name) and Voxengo Stereo Touch.

[garfield78]

I use stereodelta , good on any mix for me : http://www.mathewlane.com/stereodelta.html

[Halonmusic]

I use stereodelta , good on any mix for me : http://www.mathewlane.com/stereodelta.html

Cool. Never heard of this before.

[buchertaudio]

I built The Double Wide for my own work — needed a transparent M/S width control that kept the low end clean. Ended up releasing it for free. Single knob, bass mono below 180 Hz. macOS AU/VST3. buchertaudio.com/plugins/the-double-wide.html

[kernaudioio]

for the "check if a track is in stereo or mono" part of the original question: i made a free plugin for this called CHECK (VST3/AU, https://kernaudio.io/check). it shows a spectral correlation curve across 40 ERB bands in real time rather than a single number, so you can see which part of the frequency spectrum goes out of phase when summed. the MONO and SIDE buttons let you audition what disappears.

for actual stereo expansion with mono-safe processing: KERN WIDE ($29, kernaudio.io/wide) uses allpass decorrelation with a correlation meter built in. also worth knowing: MSED from Voxengo (mentioned earlier) is still a solid free choice if you're doing M/S work manually.

[mabian]

Polyverse Wider 2? Voxengo MSED?

- Mario

[dionenoid]

So, devs are now necroing threads to promote their own plugins.