Its a funny thing about portable speakers lately. They keep getting smaller yet more powerful. This positive trend has never been more evident than with the Jawbone Mini Jambox ($85+). At only 2 1/4″ x 6″ x 1″, its small enough to hold in your hand or fit in your pocket, yet delivers a powerful sound suitable for any audiophile thanks to dual acoustic drivers and a passive bass radiator, which sit comfortably inside a one-piece extruded aluminum housing. Additional features include wireless bluetooth connectivity, a built-in speakerphone, a 10-hour rechargeable battery, and one-touch access to all of your music.