Instruct: Classify Amazon reviews into positive or negative sentiment
Query: You can hear a pin drop when this is on....

Ok, perhaps you can't hear a pin drop, but the highest volume on this machine is still pretty quiet. On second thought, that may be a good thing since the sound choices on this unit are all pretty unpleasant - very mechanical sounding at best, and the "womb" choice sounds like the background to an alien invasion movie or something. I am totally disapointed with this cheap looking, low quality item.