Online M4A to SD2, you can put the M4A to SD2 format on your computer, tablet or mobile phone without downloading any software!
Step 1
Upload M4A file
Select files from your computer, Google Drive, Dropbox, URL or by dragging them on the page.
Step 2
Select 'SD2'
Select output SD2 or any other format as the conversion result (click the Convert button)
Step 3
Download your M4A file
After the conversion you can download your SD2 file and upload it to Google Drive, Dropbox.
m4a : MPEG-4 Audio Layer
M4A is an audio file format that is very similar to MP4. It is a proprietary file format of Apple. iTunes store contains the audios as M4A format. It uses MPEG-4 codec to contain audio files. One of the basic differences between M4A and MP4 is M4A does not contain videos like MP4.
SDII (Sound Designer II, sometimes seen abbreviated as SD2) is a monophonic/stereophonic audio file format, originally developed by Digidesign for their Macintosh -based recording/editing products. It is the successor to the original monophonic Sound Designer I audio file format.