What is M4A
Because of its exceptional performance and quality, Advanced Audio Coding (AAC) is at the core of the MPEG-4, 3GPP and 3GPP2 specifications and is the audio codec of choice for Internet, wireless and digital broadcast arenas. AAC provides audio encoding that compresses much more efficiently than older formats, such as MP3, yet delivers quality rivaling that of uncompressed CD audio.
What is WAV
The format for storing sound in files developed jointly by Microsoft and IBM. Support for WAV files was built into Windows 95 making it the de facto standard for sound on PCs. WAV sound files end with a.wav extension and can be played by nearly all Windows applications that support sound.
How to Convert M4A to Wav with Torrent All to Mp3/Wav Converter ?
1. To add M4A source file.
Click on the "Add File" button on the tool bar. The standard file open dialog appears.
2. Select a section with button 
and 
to convert or convert the whole M4A file.
3. Check in the boxes of the files that you'd like to do conversion. You can do batch conversion easily with Torrent All to Mp3 Converter.
4. Select Wave as output format.
5. Press the Convert button 
to start conversion from M4A to wav file
6. Check on the conversion progress bar, press the Stop button if you want to stop
.
7. Open output file folder with play button 
.
find out its content with Browse button 
.