Stacked LOCAL (purple) and REMOTE (orange) FFT analyzers — right-click to add band splits, drag the HP/LP and threshold handles.
Two tracks fighting for the same frequencies — kick and bass, vocal and guitar? Drop SpectralMediator on both and pair them. It's a multiband dynamics processor whose sidechain is the other track: set your bands with threshold and ratio, and inside each one only the frequencies that actually clash come down — bin by bin, both directions. You pair the two instances from a dropdown — no sidechain bus to wire.
Stacked LOCAL (purple) and REMOTE (orange) FFT analyzers — right-click to add band splits, drag the HP/LP and threshold handles.
A multiband dynamics processor — split the spectrum into bands, set threshold and ratio per band. The twist: the sidechain is a paired track, it works both directions at once, and the reduction follows that track's spectrum frequency by frequency, not one amount per band.
By hand you'd need dozens of narrow dynamic-EQ bands, each sidechained, on both tracks. SpectralMediator gives you that resolution in one pairing — automatic, both ways, set from a dropdown instead of a sidechain bus.
Insert SpectralMediator on two masking tracks (kick + bass here) and pair them via the REMOTE dropdown. Each instance writes its FFT spectrum into shared memory and reads its partner's. Wherever the partner is louder than a band's threshold, this instance ducks just those bins.
| Specification | Details |
|---|---|
| Plugin Formats | VST3 (Windows, Linux, macOS) — AU (macOS) — CLAP (Windows, Linux, macOS) |
| Platforms | Windows 10/11 (64-bit) — Linux x86-64-v3 — macOS 11+ Intel/Apple Silicon (universal) |
| Engine | FFT magnitude exchange via Boost.Interprocess shared memory (1024 linear bins) |
| Paired Instances | Up to 16 per session, auto-discovered |
| Bands | Unlimited user-defined splits per side, independent threshold + ratio |
| Detection range | Draggable HP / LP limits (20 Hz – 20 kHz) |
| Envelope | Attack, Release, Makeup per side |
| CPU | SIMD optimized — requires x86-64 with AVX2 |
| Parameters | Automatable in VST3, AU and CLAP hosts |
| Framework | Built with iPlug2 — open-source C++ audio plugin framework |
| License | Perpetual — Gumroad-validated online. Separate key from McPlugins. |
Full functionality in demo mode — audio is briefly muted every 60 seconds with a smooth fade so you can fully evaluate the plugin before purchasing. No sign-up required.
The installer is not yet signed with an Apple Developer ID, so macOS will block it on first open with messages like "cannot be opened because it is from an unidentified developer" or "could not verify [the file] is free of malware".
.pkg in Finder →
Open
Until the bundle is Developer-ID signed, Logic's hardened runtime can refuse to load the unsigned AU. As a workaround, ad-hoc sign it and clear the AU cache from Terminal:
sudo codesign --force --deep --sign - /Library/Audio/Plug-Ins/Components/SpectralMediator.component
killall -9 AudioComponentRegistrarthen reopen Logic and rescan.
One license, all formats, all platforms, forever.