The 3GA The WAVe PCM Sound format is one of the most used file format to store audio content supported by many audio editing applications for various platforms. The .3GA files store audio prepare to used on mobile devices and to transport through mobile networks.
You can transform 3GA to WAV with any converter listed down bellow. However, the WAV file can be much more larger than original 3GA (depends on the quality settings) and the audio quality will be not better than 3GA. This conversion is useful when you need to edit or post-process audio recorded in 3GA.