MP3Gain是一个非常优秀的免费的MP3音量平衡调整软件，能对MP3文件进行音轨分析和专辑对比分析，通过剪裁、音轨音量增减、专辑音量平衡、声道调节等功能无损音质的完美修正音量瑕疵;同时支持批量处理，只需填写我们想要的音量分贝即可
File size: 15 MBВ
MP3 Gain for mac is a simple tool designed specifically to adjust and normalize the volume of audio(mp3, wma, etc) files. It automatically normalize the volume of audio files and adjust the loudness of audio tracks without lossy.
It performs statistical analysis to determine how loud the file actually sounds to the human ear.
Key feature:
-Support many audio formats(mp3, wma, wav, flac, m4a, ac3, mp2, ogg)
-Support batch adjustment
Note: NOT support DRM protected audio files.
Fixed some minor bugs
Supported Operation Systems:
OS X 10.10 or later 64-bit
