There are lots of audio recordings that are awful…due to multiple factors, and most of the time it includes choosing the right microphone. Here is an article from Envato Tuts that talks about how to choose the right microphone for a voice over. Read here.
We’ve written quite a bit on voice over (sometimes spelled “voice-over” – nobody seems to know which is correct:-P) quality. Check out our article – 5 Tips For the Best Quality Voiceover Recording – No Matter What Microphone You Use.