I received this in the mail today, unfortunately it's already back in the box for return. I bought it to help my baby sleep and block out the noises in the house from her room. I plugged it in and tried to set it down and it immediately turned off. I tried again and touched the AC adapter cord and it cut off again. When I was able to get it to stay on for longer than a few seconds, the loudest volume setting was way too low.