Sold in five different colors, MatrixAudio's Qube ($50) is a small but extremely solid-feeling single-driver speaker made primarily from anodized aluminum and plastic. All six sides have the same circular shape, but the front has a perforated plastic speaker grille, while the rear has a power button, light, and micro-USB charge/audio port. Shipped with a carrying pouch and USB to audio and micro-USB cable, Qube runs for up to eight hours per charge…
