AA3 file - How do I open a .aa3 file?
The table below provides useful information about the .aa3 file extension. It answers questions such as:
- What is the .aa3 file?
- What program do I need to open a .aa3 file?
- How can the .aa3 file be opened, edited or printed?
- How can I convert .aa3 files to another format?
Table of Contents
- ✅ Sony ATRAC3 Compressed Audio
- 🔄 .aa3 file converters
- 🚫 .aa3 file related errors
We hope you find this page helpful and a valuable resource!
0 extension(s) and 1 alias(es) found in database
✅ Sony ATRAC3 Compressed Audio

The ATRAC file is a Sony ATRAC3 Compressed Audio. Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony.
Other types of files may also use the .aa3 file extension.
🚫 The .aa3 file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .aa3 file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.aa3
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .aa3 file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .aa3 file extension, write to us!