It's really quiet, it's mounted under a layout so you don't really hear it.
One of the tricks to keep any setup like this quiet, is to either attach it very solid or very loose and isolated.
I came up with this living in AZ. I had my layout in my wood shop and it was always really hot in there. Luckily I fried a command station while I was running it,
Why was that lucky
SHOP and burning electronics don't mix well!
I could not really tell you which one overheated and melted first, the transformer or the command station ! They are not cheap and it takes so long to get a replacement!