Here is a clip that I shot today with my GoPro Silver on my ballcap mount. I was actually just testing the audio with an external flexi-mic and not really trying to capture wonderful video of the ride, itself. It was a pretty boring trip, but you can judge for yourself as to the quality of the external mic in this setup vs the stock mic of the GoPro. I like it better, myself. This mount is somewhat similar to The Frame, in that the camera is not inside the clear housing. What you hear is what you get. The video was shot in One Button Mode, too. The idle chatter by my wife and I was in a normal tone of voice. I didn't hear any rattle, buzzing or any real external cabin noise problems in the audio, myself. I do feel the audio is improved with the external mic and using the GoPro e.5 mm mic adaptor setup. http://www.youtube.com/watch?v=JkzJmNhRwR4 Sorry, but for some reason, I can't seem to embed video here and have to link it in this manner. Ordinarily I would shoot cabin shots using a roll bar mount, but just testing my ballcap mount in this video.