Dirac Audio Processor
Dirac Audio Processor 1.0.4 for Mac is free to download from our software library. This free Mac app is an intellectual property of Dirac Research AB. The application lies within Audio & Video Tools, more precisely Editors & Converters.
From the developer:
Dirac Audio Processor lets you apply the created correction data to all sound that is played from your Mac, regardless of media player or application. The room correction software supports up to 24 bit resolution at 192 kHz sample rate. This is in contrast to the common minimum-phase room correction systems that do not optimize the impulse response.
You may want to check out more software for Mac, such as Dirac Live Calibration Tool, M-Audio Venom or Easy Audio Converter for Mac, which might be related to Dirac Audio Processor.