CoreEQ vs EQBase

CoreEQ is a free system-wide equalizer for macOS, processing audio from music, video, calls, games and other applications. It uses Apple’s Core Audio process-tap API without a virtual audio driver or kernel extension, and audio passes straight through when the app is quit. The filter chain combines an eleven-band ISO octave graphic equalizer with up to sixteen parametric bells, shelves and pass filters. Users get 22 built-in presets, custom presets, automatic gain and A/B comparison, with import and export for AutoEQ and EqualizerAPO presets. Settings can be saved per output device, while menu-bar controls adjust bass, mid and treble. The maker describes it as a local app that does not record, store or transmit captured audio and opens no network sockets or listening ports. CoreEQ requires macOS 14.2 or later and permission to record system audio. Release builds are currently unsigned and unnotarized.

EQBase is a system-wide macOS equalizer that processes sound from apps in real time. It includes a 10-band EQ and measured correction profiles for more than 8,600 headphone models. The free tier has no time limit and can record system audio in MP3, AAC, ALAC, FLAC, WAV, or AIFF. Pro adds microphone-based room measurement and a fitted parametric correction curve, per-app volume, mute and tone controls, and routing audio sources to one or more outputs. Pro also supports Audio Unit plugins. EQBase uses headphone correction curves from the open-source AutoEQ project. Audio is processed locally; the privacy policy says audio content, recordings, and listening information are not collected, stored, or transmitted. Normal setup does not install a driver, while optional Audiophile mode and Pro routing use a user-space Core Audio driver. It requires macOS 14.4 or later and supports Apple silicon and Intel Macs. Pro Monthly costs $4.99 per month for three Macs; Pro Annual is $39.99 per year for three Macs, and Pro Lifetime costs $79.99 once for one Mac.