The Aliph Jawbone Jambox ($199) truly jams: This Bluetooth speaker system connects to a PC or phone, and delivers pleasing sound and functional speakerphone capabilities that are far better than what most portable devices can achieve. The classy Jambox measures 5.9 inches long by 2.2 inches high by 1.6 inches deep, weighs just 1.5 pounds, and is available in four colors (staid black, bright blue, vivid red, and silver gray). The Jambox’s stylish wraparound grille varies in design depending on the color; all versions have rubberized top and bottom plates. The Jambox pairs smoothly with Bluetooth. Slide the power switch to its farthest point off-center, and the device will announce that it’s in pairing mode; once the two are successfully paired, the Jambox announces that, too. The Jambox already supports A2DPk, and it will support Multipoint for pairing with multiple devices. In our tests, the Jambox produced pleasing, full-bodied audio. Some tracks sounded a tad bright in spots, but overall we encountered better midtones and bass than with the built-in speakers on a phone or tablet.