MP3 Normalizer 2
MP3 Normalizer 2 is a macOS audio utility for leveling MP3 and WAV volume, improving consistency across music, podcasts, interviews, and other recordings.
What is MP3 Normalizer 2?
MP3 Normalizer 2 is a macOS audio utility that helps users make MP3 and WAV files play at more consistent volume levels. It is designed for people who manage music libraries, spoken-word recordings, podcasts, interviews, audiobooks, and older audio that may sound too quiet or uneven from track to track. The app supports batch processing, so you can normalize a single file or a large folder collection in one pass. It offers peak normalization, loudness normalization based on EBU R128, and automatic volume control for voice-focused recordings. MP3 Normalizer 2 also includes audio effects such as fade-in, fade-out, and silence trimming, and it can preserve folder structure and transfer tags during processing. Published by Amvidia, it fits well into Mac workflows for preparing audio for playback, archiving, or portable listening.
Key features
- Normalize MP3 and WAV files to more consistent volume levels.
- Process single files or large batches of folders at once.
- Choose between peak normalization and EBU R128 loudness normalization.
- Apply automatic volume control to speech-heavy recordings.
- Trim silence and add fade-in or fade-out during processing.
- Preserve source folder structure when processing entire collections.
- Transfer metadata tags to the normalized output files.
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Safety overview
Status: Mostly safe
MP3 Normalizer 2 is a legitimate audio-processing app for macOS. Its normal use involves reading audio files you choose and writing new processed output, which is expected for this kind of tool. The main practical caution is to review output settings and destination folders before running large batches, since audio processing can overwrite your workflow expectations if you do not keep originals organized. If your recordings are important, keep backups of source files before making bulk changes.
Recommendation: Keep MP3 Normalizer 2 if you actively normalize music or voice recordings on your Mac. If you no longer use it, removing the app is usually fine, but keep any source audio and finished exports you still need before cleaning up related files.
Common paths
/Applications/MP3 Normalizer.app
Cache paths
~/Library/Caches/com.amvidia.MP3-Normalizer
Support paths
~/Library/Application Support/MP3 Normalizer
Preference paths
~/Library/Preferences/com.amvidia.MP3-Normalizer.plist
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