Leapwing StageOne Plugin Review: Stereo Width and Depth for Mastering

The Leapwing StageOne is a stereo enhancement plugin designed to add width, depth, and spread to a mix or master without the phase problems you get from traditional stereo widening approaches. It's simple to use, genuinely effective on mono or narrow mixes, and worth understanding if you regularly work on material that needs more space.

What StageOne Does

StageOne has three main sections: Width, Depth, and Mono Spread. Width controls the stereo spread above a frequency threshold set with a high-pass filter, so you can widen the top end while leaving the low end as mono. Depth adds a short reverb or delay-based effect, essentially a perceived sense of room or space, with a tilt EQ to shift that effect towards the low or high end. Mono Spread converts hard-mono signals into stereo.

The plugin lets you bypass each section independently, which makes it easy to dial in each element and hear exactly what it's contributing before combining them. An A/B comparison feature and a handful of presets give you starting points for common mastering scenarios.

How to Use Width for Mastering

Set the frequency threshold for the Width section to the point where you want the widening to start. For most material, starting around 200Hz keeps the bass mono and tight while opening up the mid and high frequencies. Then adjust the width percentage by ear. A small amount of widening, 10-20%, is usually enough to notice a difference on material that's feeling narrow. More than that and it can start sounding unnatural on mono playback.

The Depth section is adding a very short reverb, half a second or less. It can make a flat or dry mix feel more three-dimensional. Keep the depth percentage low, less is more here. The tilt EQ within the depth section is useful for controlling whether that perceived depth feels present in the low mids or the top end.

When It's Useful and When It Isn't

StageOne earns its place when you have a finished mix that's inherently narrow or flat and the mix engineer isn't available to address it at the source. It's also good for mastering catalogue material where the original recordings were done in mono or narrow stereo and need to feel more open for modern listening environments.

It's less useful on a well-produced mix that already has good stereo width. Adding more width on top of a mix that's already well-spread can push elements too far and cause problems on mono systems. The check, as always, is to listen in mono and verify that nothing important is cancelling out or disappearing.

The presets for mastering scenarios give a reasonable starting point. The Extra Wide preset, for example, applies more widening above 120Hz with some depth in the low mids, which is useful for reference when learning what each control does in combination.

Build Quality and Value

Leapwing has a good track record with their DynOne multiband compressor, and StageOne feels like a similarly well-thought-out tool. It's not a plugin you'd use on every session, but for the specific job of adding controlled width and depth to narrow material it does the job cleanly. If your tracks regularly come out feeling flat and one-dimensional, it's worth downloading the trial.

FAQ

What does Leapwing StageOne do?

Frequency-selective stereo widening, short-reverb depth, and mono-to-stereo spread. Three independent sections you can bypass individually for precise control.

Is it safe for mono playback?

With careful settings and keeping bass mono via the frequency threshold. Always check in mono before committing.

When to use stereo widening in mastering?

On narrow mixes where remixing isn't possible. Avoid on well-spread mixes where over-widening creates mono compatibility problems.

How does it compare to a standard stereo imager?

More precise. Frequency-selective widening plus a depth component gives more useful control than just a width knob.

Browse Streaky's own mixing and mastering plugin range, including Tight Arse and Body Builder, at streakyaudio.com.