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eqMac vs Background Music: catalog facts
eqMac	Background Music
Freemium Free basic and 10-band equalizers; mixer, parametric EQ and other features require Pro.	Free Free and open source under the GPL-2.0 licence.
macOS	macOS
Equalizes all system audio, not a single player Headphone reference presets for thousands of models	Per-application volume control with boost above maximum Auto-pauses music when other audio plays
Many advanced features are Pro-only macOS only	Still labelled alpha by its developer Auto-pause works only with supported music players
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
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 October 1, 2026

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