Wholesale Jambox On SaleThis little Jambox jams! The bass is pretty heavy for a speaker of its size, and the bluetooth connection was crystal clear. the Jambox is also sturdy and made of rubber casing and stainless steel components. That's good because if the song you are playing has enough bass, the Jambox will bump with it a little bit. Amazing that such a small speaker has such serious sound. In fact, it puts out 85 decibel, all from a single, ultra small dome speaker.