The idea behind Evolve was extremely smart: rather than just offer another clone of the $300 Bose SoundDock, Griffin developed a visually stunning $300 system with two large, battery-powered cube speakers that rested on top of a matching wireless and charging base with an iPod dock. You could dock an iPod in one room, then hear and control the speakers up to 100 feet away, placing each one on the charging base, or carrying them temporarily to different?