a9a
Music
Only for Mac
Free
Mac
Make audio analysis and cleanup for large collections of sound files simpler. Efficiently handle loudness, peak, fades, loop settings, and MP3/AIFC read/write support.
a9a is a macOS application designed for analyzing and editing large audio libraries.
It helps audio professionals quickly inspect and process large collections of audio assets.
Features
■ Audio Analysis
• File name
• Channel count
• Sample rate
• Bit depth
• Duration
• Integrated Loudness (LUFS)
• Loudness Range (LRA)
• True Peak
• Crest Factor
■ Audio Editing
• Gain adjustment
• Loudness normalization to target values
• Peak level adjustment
• Fade-in and fade-out processing
• Loop point configuration
• Non-destructive editing
New features and improvements are added regularly.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
* Added support for reading MP3 files
* Added support for writing MP3 files (requires a separate LAME installation)
* Added support for reading and writing AIFF-C (AIFC) files
* Added support for opening files from Finder via file associations
The developer, Masashi Fujimoto, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Masashi Fujimoto
- Size
- 4 MB
- Category
- Music
- Compatibility
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Maronaskar