Mitsubishi reserves the most advanced circuitry and components available for this top-of-the-line Diamond Series model. WS-55711 provides our best picture performance and our longest list of features. NetCommand® 2.0, Mitsubishis exclusive on-screen control system is now easier to set up and use, and can control twice the number of AV system components. NetCommand® makes control of a sophisticated home theater system as simple as selecting an icon from the TV screen. IEEE 1394 (FireWire®) digital home networking interface, for connecting with the emerging category of digital audio/video devices, such as D-VHS high definition VCRs, hard disk drive video recorders and AV receivers.