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SoundSource vs EarTrumpet: catalog facts
SoundSource	EarTrumpet
Paid Paid app with a free download to try it before purchase.	Free Free and open source.
macOS	Windows
Per-app volume and output device routing Audio effects and Audio Unit support for any app	Per-app volume sliders from the taskbar Quicker than opening the Windows volume mixer
macOS only Paid after the trial	Windows only Focused on volume control rather than audio effects or routing
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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