Fold it down. Get it back.
VORTEX folds your immersive mix — 5.1 up to 9.1.6 — down to any smaller format, stereo or mono, without corrupting your signal. And just like our upmixer, the way back is guaranteed. Simple, easy, effective.
It doesn’t touch your sound
A downmix should be your mix, folded — not a new mix someone else made for you. VORTEX does the fold, shows you what it’s doing, and stays out of the way.
Nothing automatic
No auto-gain, no safety nets, no hidden processing rewriting your fold behind your back. What you hear is your mix.
Nothing in the way
Zero latency, one clean direct fold — never a chain of conversions stacking up inside.
Nothing hidden
Every control shows the real value it’s applying, in dB. Turn a knob and you see exactly what changed. Double-click puts it back.
And you can always come back
VORTEX and the AXIS Upmixer speak the same language — literally the same numbers. Fold your mix down with VORTEX, bring it back up with AXIS, and it’s exactly where you left it.
Gold means safe
Your fold is the standard one — the one AXIS knows how to undo. Deliver it with confidence.
Red means it’s yours
You’ve shaped the fold on purpose — and the light says so. One click brings you back to the standard.
What keeps Recovery Lock gold
Gold simply means you are still delivering the untouched ITU fold. It stays gold while the mix controls remain at their standard positions:
Red is not an error: it means you have deliberately made a custom fold. Click the indicator whenever you want to return every relevant control to the ITU values.
Don’t take our word for it.
Upmix with AXIS. Fold with VORTEX. Flip polarity against your original — and listen to it disappear. Silence is the proof.
Measured at −155 dB across the full round trip. Requires AXIS Upmixer v0.7.6 or later.
From any of these… to anything smaller
Atmos beds, 7.1, 5.1, stereo for the client, mono for the phone check — every fold is one clean, direct step. Only the controls your format needs show up.
Protect the fold only when you need to.
VORTEX starts as a pure, zero-latency fold. Dialogue protection and true-peak limiting stay out of the signal until the delivery actually calls for them.
Keep dialogue in front
DIALOG follows the centre channel and gently makes space in everything around it — up to 6 dB — when a stereo or mono fold needs extra intelligibility.
True-peak protection, opt-in
Switch on the 4× true-peak limiter only when the fold exceeds the delivery ceiling. You get an adjustable ceiling and live gain-reduction meter; latency is zero when off and 128 samples when on.
See what you’re folding
The radar shows your mix from above — with the ceiling on its own scope when your format has height — so you always see what’s about to fold into the bed. No surprises after the bounce.
Up with AXIS. Down with VORTEX.
Take a stereo track up to immersive with AXIS, mix it in the room, fold it back down with VORTEX — and the original stereo is still there, intact. Two plugins, one promise: your signal never gets corrupted on the way.
Fold with confidence
Try it free for 30 days. Buy when you’re ready.
Licensed through your Kaizen Audio account — no iLok.
Questions? hello@kaizen.audio
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Designed by sound engineers, for sound engineers.
Every format, control and delivery workflow.
The complete 18-section guide covers setup, licensing, ITU folds, Recovery Lock, the limiter, DAW notes and troubleshooting.
Read the VORTEX manual