https://www.digitalfaq.com/forum/vid...ost-audio.html
My audio was really low and when I tried to raise it with my capture card it brought up my noise floor. I don't have an audio sample of before I raised the audio in my card but here's one of after. I was told that part of the video was shot by a hired professional. It's in Hawaii and I know they like to screw over the tourist so maybe they're a professional. Anyways I'm guessing the volume wasn't recorded really low like that.
You can control your lows, mids, and highs. That's probably all you need for this. From everything I've seen online it's really low noise.