File Extension Library


.A21 File Extension

  • Developer by: BSS Audio
  • Category: Various data Files

What is an .A21 file?

.A21 file extension is created by BSS Audio. .A21 has been classified as Various data Files.

.A21 is Soundweb firmware

The a21 file extension is associated with Soundweb, a programmable DSP system for Microsoft Windows operating system, developed by BSS Audio.

The .a21 files contain firmware update data for Soundweb.


How to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .a21 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

How to Open .A21 file on different platforms

Open .A21 File on Windows

  • Right-click a .A21
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .A21 file and Select check box "Always use this app to open .A21 files" Press "Ok"

Open .A21 File on Mac

  • Right-click (or Ctrl + Left-click) the .A21 file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .A21 File on Linux

Right click on the .A21 file, choose "Open with" and select a program from the list above

Open .A21 File on iPhone

Select a file. If you don't see an application to open the .A21 file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .A21 File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .A21 files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .A21 files

  1. You need to update the application that you normally use to open .A21 files. Only the latest version of the software supports the current .A21 file format
  2. You need to check the .A21 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)