Klipsch iFi Speaker System for iPod The long-range RF remote can send signals through walls and floors and up to six remotes can be used to control the iFi Silver finish; RF remote can control iFi and iPod through walls and floors Built-in Class D amplifier distributes 200 watts of peak system power Docking/charging station for iPod/iPod Mini; line-level input Each RSX-3 measures 4.8 x 8.75 x 6.7 inches (W x H x D) w/base