reasons for purchasing this item was for environmental noise reduction (dog snoring, tv, husband on phone while sleeping, etc) and to remove an air cleaner used for white noise off my floor. I loved the sounds, the only and main issue was the volume from 1 to 2 was a huge difference. #1 was too low and #2 was too loud. I ended up returning the item.... Useable, but not completely happy Use it every night. There is an extra "buzzing" sound that is disappointing but we are choosing to ignore it. We would like to have had and sound level in between #1 and #2--#1 is too soft and #2 is too loud! Amazing machine!! I would definitely recommend this product; it has a huge amount of sound choices and all are crystal clear...one warning though: you will not want to get out of bed! It actually works This little machine offers umpteen sounds, but "Surfs Up" has been doing such a slam-bang job of lulling me to sleep that I havent been inclined to sample the others. I mean, why bother? I have been sleeping more soundly and waking up much less often during the night -- usually no more than once instead of my pre-purchase pattern of four or five times. Its made a huge difference for me, especially in feeling alert at work. Great gift! Got this for my dad as a gift for fathers day. He loved it! says its very soothing easy to control.