SD2 File Type

- The quick facts

What are SD2 files and how to open them

Are you having problems opening a SD2 file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a SD2 file?

A .SD2 file is a Sound Designer II Audio file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open SD2 files

Important: Different programs may use files with the SD2 file extension for different purposes, so unless you are sure which format your SD2 file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different SD2 openers which you will find listed below.

Last updated: August 27, 2022

Various apps that use files with this extension

These apps are known to open certain types of SD2 files. Remember, different programs may use SD2 files for different purposes, so you may need to try out a few of them to be able to open your specific file.

WavePad Sound EditorWavePad Sound EditorUser submitted
QuickTimeQuickTimeUser submitted
WinampWinampUser submitted
QuickTime AlternativeQuickTime AlternativeUser submitted
MixPadMixPadUser submitted
SAS Enterprise GuideSAS Enterprise GuideUser submitted
Storm CodecStorm CodecUser submitted
2012 Lacerte Tax2012 Lacerte TaxUser submitted
QT LiteQT LiteUser submitted
jetAudiojetAudioUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about SD2 file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.