Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.ADX
File Type
CRI ADX Audio Format
Category
Audio
Best first step
Use compatible software
Quick Summary
A practical overview of the .adx file format
The ADX file format is a proprietary lossy audio compression format developed by CRI Middleware. It is primarily used in video games, particularly those developed for consoles like the Sega Dreamcast, PlayStation 2, GameCube, and various mobile platforms. ADX is based on ADPCM (Adaptive Differentia…
File extension
.ADX
File type
CRI ADX Audio Format
Category
Audio
Recommended action
Open with a trusted compatible app
How to open a .adx file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .adx.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .adx file?
File extension details and usage information
The ADX file format is a proprietary lossy audio compression format developed by CRI Middleware. It is primarily used in video games, particularly those developed for consoles like the Sega Dreamcast, PlayStation 2, GameCube, and various mobile platforms. ADX is based on ADPCM (Adaptive Differential Pulse Code Modulation) technology, which allows for high-quality audio playback while maintaining a relatively small file size, making it ideal for the limited storage and memory constraints of older gaming hardware. One of the key features of ADX is its ability to loop seamlessly, which is essential for background music in games. It supports both mono and stereo channels and allows for variable sampling rates. Because it is a specialized format for game development, it is rarely used for general-purpose audio playback outside of the gaming industry, and users typically need specific tools or plugins to convert these files into more common formats like WAV or MP3 for standard media players.
Software Compatibility
Programs that may open or work with .adx files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .adx files be converted?
Options for saving or exporting this file to another format
In many cases, a .adx file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .adx file.
Why can't I open a .adx file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .adx format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .adx files
To open a .adx file, use software that supports this file format.
- VLC Media Player
- foobar2000 (with vgmstream plugin)
- CRI Atom Craft
- ADX2ADX
- vgmstream
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .adx file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.