Power AMR MP3 WAV WMA M4A AC3 Audio Converter has a self-explanatory title. This tool converts AMR, MP3, WAV, WMA, M4A, AC3, but also other formats such as MPEG, MOV, AIFF and 3GP to audio files with various extensions (e.g. MP3, WMA, WAV, OGG, AMR).

The user interface is standard, yet compact and user-friendly. One of the advantages is that the application supports batch conversion (is able to process multiple files at a time).

Usage is simple: you can add files or folders (drag and drop function is supported), select the output format, configure output properties (e.g. bitrate, frequency, channels, attributes, compression quality), choose the output folder and initiate the conversion process.

Optionally, you can use a tag editor for the MP3 files, and change title, artist, album, genre, comments, add album art, search for the information in the iTunes Store or via Microsoft, and others.

You can also remove audio files from the queue with minimum effort, and access help documentation (which is very limited). We put a few audio tracks to the test. The software converted the audio files in a relatively short amount of time, and it managed to preserve good sound quality.

The audio converter uses a moderate amount of system memory, but we would have liked to explore more features (e.g. support for additional audio formats, documentation that explains format options). The user interface could use some improvements as well. Nevertheless, Power AMR MP3 WAV WMA M4A AC3 Audio Converter gets the job done.