It is a simple tool designed specifically to adjust and normalize the volume of audio files (mp3, WMA, etc.). It changes the loudness of audio tracks without loss and automatically normalizes the level of audio files. It uses statistical analysis to determine the file's audibility to the human ear. Audio files that are DRM-protected are not supported.

Features of MP3 Gain - Audio Normalization for macOS

• Support for many audio formats (mp3, WMA, Wav, FLAC, m4a, ac3, mp2, Ogg)
• Comply with the EBU's R128 loudness standardization specification.
• Support batch, increasing the volume

Technical Details and System Requirements

• macOS 10.10 or later (Apple Silicon compatible)