We went rummaging through Griffin's New York HQ yesterday and got some one-on-one time with the sexy new Evolve wireless speaker dock. Here's how it works. You dock your iPod on the Evolve base station and then you can carry the cube-shaped speakers anywhere you want. The speakers last for 10 hours per charge and Griffin says you should get about a 150-foot range with them. We didn't go the full 150 feet, but here's what we found out.