MP3 Gain is a simple tool to adjust the volume of mp3/m4a/mp4/mov/m4v files.It analyzes and losslessly adjusts audio files to a specified target volume. Instead of simply peak amplitude normalization, it performs statistical analysis to determine how loud the file actually sounds to the human ear.

Key feature:
  • Volume adjustment is completely lossless
  • Without re-encoding
  • Support batch adjustment
  • Easy to use, no professional knowledge

    Note: NOT support DRM protected M4A file.

  • What's New
  • Fixed some bugs

  • MP3 Gain (com.seasoft.mp3gain) is a Mac software application that has been discovered and submitted by users of The latest version that our users have reported running on their systems is MP3 Gain 2.1.1.