It is pretty quiet and works well. The last 2 tumblers I had were from Harbor Freight and the belt would always break and the lid was much harder to put off and on. I am very happy with this one.
Very impressed with machine, well built, quiet, easy to use, disappointed with capacity, 3lb grind weight includes drum. Drum weighs just under 2lbs so by the time you add your water and media not a lot of useable weight left
I love the tumbler works great, really quite, sounds like a white noise machine, only problem I had was it only sends enough to do one set of rocks. I'm having issues finding replacements.
The first time run it is a bit touchy on the weight but once it got broken in I have had no problems. The compounds that comes with it are good for one complete run and seemed to work well. The instructions are pretty slim. It would have been nice for it to give the amount of each compound to be used for each process.