I got a Sonic Boom and it's been working great for the last year or so. I use the bed shaker. When we tried the sound and hubby turned it up, the lady across the street heard it. MIL freaked out and said for me to send it back. I don't use the sound feature at all. Hubby gets up with his alarm clock which is a regular digital clock, but he has to cover it since the display is too bright even on a low setting.