The sound quality is excellent, just a bit quiet. I cut the movies in iMovie, because the volume can be improved between 120 to 130% and the sound is crystal clear in this setting. There is no ambient noise, even at a distance of 1 m. Breath sounds, despite the increase in the volume only if all listening closely. Even with studio recordings of the sound is not much better (although the intended more to do with the post as I). Perfect for the price.