A sequel to its tiny Qube speaker, Matrix Audio has released the slightly larger Qube 2 ($80), which the company says is the world's smallest stereo speaker. Inside the solid aluminum chassis are two three-Watt speakers, plus a Bluetooth wireless chip. It offers up to eight hours of music playback on a charge, refueling over USB. Matrix Audio includes a charging cable that doubles as a 3.5mm audio cable, as well as a carrying bag and wrist strap.
