The Xantech RT-8 also requires a power supply - 782 $50.00, and a RC68+ IR programmer $160.00, and IR emitters - $10.00 each and a IR receiver - $60.00-$110.00. If you have a Sony sat receiver it would be cheaper to buy another brand as a second receiver, but if you have a RCA or Hughes sat receiver, it is already set up for seperate IR commands.