I got this one a few months ago and have been running it in my basement directly under my living room, separated only by the floor and a bit of insulation. Can't hear it at all. It's been working well and it's a fun low-investment hobby. I live on a glacial moraine so there are lots of unique rocks in my backyard, and my son enjoys digging for them. https://a.co/d/4HSnVVX