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Valhalla Supermassive vs iZotope Neoverb: catalog facts
Valhalla Supermassive	iZotope Neoverb
Free Free to download from Valhalla DSP.	Paid Commercial plug-in sold by iZotope; check the product page for current pricing.
macOS	Windows, macOS
22 distinct reverb and delay modes Handles very long decays and repeating echoes	AI Reverb Assistant suggests a starting setting from your audio Aimed at vocals and instruments in music production
Runs as a plugin inside other audio software, not on its own Aimed at large, ambient effects rather than subtle room sounds	Runs only as a plug-in inside a host DAW Paid commercial software
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.