I use it to youtube videos and I have to have optimum quality, record the sound separately with audacity to make a call through noise reduction.
No position of the microphone / gain setting on the micro level or are entered to change anything. And of course then have to go through an editing software for audio and video pick.
Apart from that, and once the breath of the excessive eliminated capture angle, the voice quality is very good. I did some tests with an acoustic guitar that have been far from conclusive, but we will say that this is not its primary purpose.
In conclusion, if you have the proper environment with a minimum piece isolated acoustically speaking, it's a good product. But at this price I would have liked an outlet for his voice a little tighter at the corners which would have avoided the inconvenience.