The greatest distinction between MP3 and M4A is the quality: M4A information seem far better. Astonishingly, they are also more compact in size, and that is yet one more reason for changing MP3 to M4A. To find out more concerning the discrepancies, check out the MP3 vs. M4A comparison table https://secino2047.wixsite.com/convertidoramp3/post/convert-any-file-to-convertidor-mp3