An interface system for coupling a first digital device with a second digital device, comprising: circuitry for combining a high frequency digital content channel for transmitting digital content from the first digital device to the second digital device and a low frequency back channel for transmitting information from the second digital device to the first digital device to form a composite channel; a cable for transporting the combined channel; the circuitry comprising: a main channel transmit filter coupled between the first digital device and the cable and configured to filter the digital content channel, a back channel receive filter coupled between the first digital device and the cable and configured to filter the back channel, a back channel transmit filter coupled between the cable and the second digital device and configured to filter the back channel, a main channel receive filter coupled between the cable and the second digital device and configured to filter the digital content channel, a first cross talk cancellation filter coupled between the cable and the second digital device, wherein the first cross-talk cancellation filter is configured to reduce cross-talk from the back channel to the digital content channel, and wherein the first cross-talk cancellation filter subtracts a cross-talk signal from the digital content channel using a differential input of a receiver of the second digital device, and a second cross-talk cancellation filter configured to reduce cross-talk interference from the digital content channel to the back channel, the second cross-talk cancellation filter being coupled between the first digital device and the cable. circuitry for combining a high frequency digital content channel for transmitting digital content from the first digital device to the second digital device and a low frequency back channel for transmitting information from the second digital device to the first digital device to form a composite channel; a cable for transporting the combined channel; the circuitry comprising: a main channel transmit filter coupled between the first digital device and the cable and configured to filter the digital content channel, a back channel receive filter coupled between the first digital device and the cable and configured to filter the back channel, a back channel transmit filter coupled between the cable and the second digital device and configured to filter the back channel, a main channel receive filter coupled between the cable and the second digital device and configured to filter the digital content channel, a first cross talk cancellation filter coupled between the cable and the second digital device, wherein the first cross-talk cancellation filter is configured to reduce cross-talk from the back channel to the digital content channel, and wherein the first cross-talk cancellation filter subtracts a cross-talk signal from the digital content channel using a differential input of a receiver of the second digital device, and a second cross-talk cancellation filter configured to reduce cross-talk interference from the digital content channel to the back channel, the second cross-talk cancellation filter being coupled between the first digital device and the cable. a main channel transmit filter coupled between the first digital device and the cable and configured to filter the digital content channel, a back channel receive filter coupled between the first digital device and the cable and configured to filter the back channel, a back channel transmit filter coupled between the cable and the second digital device and configured to filter the back channel, a main channel receive filter coupled between the cable and the second digital device and configured to filter the digital content channel, a first cross talk cancellation filter coupled between the cable and the second digital device, wherein the first cross-talk cancellation filter is configured to reduce cross-talk from the back channel to the digital content channel, and wherein the first cross-talk cancellation filter subtracts a cross-talk signal from the digital content channel using a differential input of a receiver of the second digital device, and a second cross-talk cancellation filter configured to reduce cross-talk interference from the digital content channel to the back channel, the second cross-talk cancellation filter being coupled between the first digital device and the cable.