I have posted a RMA request with the retailer, awaiting response.

I'm hoping i don't get another with the same issue although i have a feeling i might like the person above.

Here is how mine sounds https://drive.google.com/open?id=0B8Mcp ... 05RYmc3Z28

About your noise, may I ask you to check if there's nothing hitting the fan's blades? It may be also a bearing issue. There is no obstruction, from what I can tell. It could be a bearing issue, but it sounds more like the low frequency buzz that plagues many low end fans. It is not loud, but due to...