MS Widener 2.0 — Free mid/side stereo widener plugin A stereo widener that keeps the bass in mono.
MS Widener widens your mix up to 200%, with controls to keep your bass in mono. New in 2.0: a new interface with a second view, Route, and Generate sides to turn a mono synth into stereo.
It's free forever, on Mac and Windows.
Featured by Amner Hunter, GetMusicTools and SatyaTunes
Hear it on synths and a bass arp
Level-matched · both takes run in sync
Unprocessed and Processed play at the same loudness.
On the panel
- Stereo fieldShows your mix as dots: the wider the cloud, the wider the stereo image. Drag its edge to set the width.
- Generate sidesTurns a mono source into stereo by making side signal from the mid above 150 Hz. In mono the added part cancels out.
- LiftAdds width in the louder parts of a song, so the chorus opens up more than the verse.
- Mono beneathEverything below this frequency is summed to mono, so the kick and bass stay centred.
MS Widener's second view: Route view
With 2.0, every ModulTone plugin gets a second view, Route. We made it to visualise mid/side, and whether you are working on the mid or the side. Every control sits on the route that it changes.
Why is it free?
We think MS Widener is a nice way to introduce producers and mixers to widening the stereo image. So we want to give you this plugin for free.
Interested in what more you can do with mid/side mixing? Check out our other products here.
Download it hereWhat it does
- Width from mono to 200%, with the knob or by dragging the edge of the stereo field
- Mono beneath sums everything below a crossover (up to 500 Hz) to mono, so the bass stays centred
- Generate sides turns mono sources into stereo, using only the mid above 150 Hz, and cancels out in mono
All 10 features
- Lift adds up to 60 points of width in the parts that are louder than the last few seconds
- Air adds or cuts up to 6 dB of high end on the side only, and Rotation turns the stereo image up to 45° before it's widened
- Huge mode doubles the width above 100%, up to 300%, and pulls back when the correlation falls below −0.3
- Correlation and Mono sum readouts, and Listen to check the output in Stereo, Mono or Side
- Bass Monitor plays only the mono low end, so you can hear what's below the crossover
- Two views: Line, and Route, which draws the signal path from input to output
- 9 presets, A/B comparison, undo and level-matched output
Specs
- Formats
- VST3, AU
- Requirements
- macOS 11 or later (Apple Silicon & Intel), VST3 or AU host · Windows 10 or later (64-bit), VST3 host
Questions about MS Widener
Is MS Widener really free?
Yes, for good. It's the full plugin, with no time limit and no licence key.
What do I need to download it?
An email address. The download link goes there. You'll also get the occasional email about new plugins and sales, with an unsubscribe link in each.
Does it work in my DAW?
VST3 and AU on macOS 11 or later (Apple Silicon and Intel), and VST3 on Windows 10 or later (64-bit). It runs in Ableton Live, FL Studio, Logic Pro, Cubase, Studio One and Reaper. There's no AAX version, so it doesn't run in Pro Tools.
Will widening ruin my mono compatibility?
Not below the crossover: Mono beneath keeps everything under it in mono, so the bass sums to mono intact. Above it, extra width costs some level in mono, and the Correlation and Mono sum readouts show how much. The side that Generate sides adds cancels out in mono. Huge mode goes further and pulls itself back when the correlation drops below −0.3.
Can it turn a mono synth into stereo?
Yes, with Generate sides, new in 2.0. It makes side signal out of the mid above 150 Hz, so the low notes stay mono. Width can't do this on its own, because a mono source has no side to turn up.
I have 1.1. How do I update to 2.0?
The plugin offers the update in its window within a day, and Update installs it. Or download it again from this page. It installs over 1.x, so there's nothing to remove first.
Will my 1.x sessions sound the same?
Yes. The 1.x controls keep their names and ranges, and the new ones start at zero, so a 1.x session opens with the same settings and the same sound.
Changelog
2.0.019 Oct 2026
- New interface, with a second view, Route, that draws the signal path
- Added Generate sides: side made from the mid above 150 Hz, so a mono source can go wide
- Added Lift: more width in the louder parts
- Added Air, a high shelf on the side only, and Rotation, up to 45°
- Added Listen (Stereo, Mono, Side) and correlation and mono-sum readouts
- Added presets, A/B, undo/redo and Bypass
- Fixed: the stereo field drew left-channel signal on the right
- Sessions from 1.x open with the same settings and the same sound
1.1.09 Oct 2026
- Added update notifications with a one-click Update button
- Added a gear menu to turn update notifications off
- Fixed: the Mac installer always installs to the plug-in folders
1.0.030 Aug 2026
- First release.
Liked MS Widener? Check these other ModulTone plugins!
Each plugin gives you different controls over mid and side.
MS Saturator
Mid/side saturation plugin
Drive the side harder than the centre, or the other way round.
MS Saturator — €69Press play, then switch. Both takes run in sync
- MS CompressorCompress the centre and the sides with their own settings.€49
- MS PunchShape the attack in the middle and leave the room on the sides alone.€59
- MS FieldSee, per band, what the mix loses in mono before anyone else hears it.€49