The sound is decent for it's size, IMHO, but not worth the list price.
David Pogue reviewed a number of small speakers a few months ago in the NYT:
http://www.nytimes.com/2011/03/24/te...pagewanted=all
I had the Creative D100 before my wife scooped it up for her office and it worked well, but was not as portable as the Jambox.