M4A is the standard file extension of MPEG4 audio file.

Audio/Video To WAV Converter = M4A To WAV Converter

It is very easy to use.

Step 1. Download Audio/Video To WAV Converter

Step 2. Download & install the latest Combined Community Codec Pack (CCCP).

Step 3. Run the M4A to WAV Converter, add your M4A file to the program.

Step 4. Click Convert button, the program will output wav file with high quality, even up to 1411kpbs.

Done!

The M4A To WAV Converter was tested thoroughly and was found absolutely clean, which means it does not contain any form of malware, spyware, viruses, trojans and backdoors.