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x42 plugins vs TDR Prism: catalog facts
x42 plugins	TDR Prism
Free Described as an open-source plugin collection; check the site for packaged builds.	Free Distributed by Tokyo Dawn Records as a free plugin.
Linux	Windows, macOS
Standards-based level meters (IEC, EBU) Zero-latency equalizer with spectrum analyzer	Human auditory model with masking indication Compares spectra from inputs, sidechains, files and other instances
Requires an LV2 host or a JACK setup Site gives little release or platform detail	Runs as a plugin, so it needs a DAW or plugin host Analysis only, with no processing of the audio
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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