Griffin Technology has announced the unveiling of its new lineup of powered speaker systems. Evolve is a speaker system with a flat charging base that holds your iPod in a Universal Dock. On either side are charging stations for two cube-shaped speakers, each housing its own long-lived Lithium-Ion battery pack. To charge these speakers, all you have to do is place them on the charging station — nothing to plug in, nothing to unplug. The Lithium-Ion batteries will give you up to 10 hours of music, and each speaker cube features its own on/off power switch and automatic sleep mode for power conservation.