Jawbone Jambox

Jawbone Jambox Jeff Harris

The six-inch Jambox has better sound than any other comparably sized, portable Bluetooth speaker. Its two midrange drivers have two magnets per bell, a system that generates more sound for every watt of power drawn from the battery. Meanwhile, the battery itself doubles as the weight inside the Jambox’s passive radiator, vibrating to produce deep rumbles. Altogether the box pumps out up to 85 decibels—as much noise as some guitar amps—and is a significant upgrade to the tinny speakers on most phones and MP3 players. $200