Just got the Neo today, and overall, I'm pleased, however, there is a noticeable audio feedback. I'm using a Vizio Soundbar Toslink-ed to a Sony 850D, and have the Neo connected to the Apple TV. Before connecting the Neo, I never had these sound issues.
It's especially noticeable when scrolling the Apple TV menu. When loading or exiting an app to the home screen, it sounds like an electronic space fan noise (horrible description), and when moving around the icons on the home page another noise accompanies it.
Here's a sample.
What's going on here? 🤷♂️