The CDR-1000 includes all the great features of the CSR-1000 single receiver, like Advanced ClearScan, but also some very unique exceptions. The CDR-1000 has antenna pass through connections that allow a user to connect three duals (six receivers) to two antennas. All that, and the cables are included with each unit. No extra distribution unit or parts required. The CDR-1000 also has an IEC Cord internal switching power supply.