There are many alternatives to MP3 Normalizer for Mac if you are looking for a replacement. The best Mac alternative is MP3Gain, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to MP3 Normalizer and five of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to MP3 Normalizer are QMP3Gain (Free, Open Source), iVolume (Paid), ppmBatch (Paid) and MP3Gain Express (Free, Open Source).
A free automatic mp3 volume normalizer. MP3Gain analyzes and adjusts mp3 files so that they have the same volume. There is no quality lost in the change because the program adjusts the mp3 file directly, without decoding and re-encoding
Graphical user interface front end supporting MP3Gain engine which analyzes and losslessly adjusts mp3 files to a specified target volume. A complete re-creation (made in QT4) of the original MP3Gain GUI, however it can be run on more platforms.
iVolume calculates the volume perceived by the human ear for each song of your iTunes music collection. Thereby it gets the most out of the approved Replay Gain algorithm and adjusts your songs accordingly.
ppmBatch allows you to analyze and normalize your audio files according to various broadcasting loudness standards. It batch processes files in multiple real time and provides intuitive user feedback about each file's compliance status and processing progress.