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Why can't I buy digital cables that are as long as some analog cables?
In the world of audio and video cables, you've probably noticed that long analog cables seem to be everywhere, while digital cables are relatively short.

The reason for this is digital signals degrade very quickly. They simply can't go very far, so cables need to be quite short.

Analog signals don't degrade as quickly, so cables can be longer. In addition, while an analog signal can still be seen or heard even when it is of poor quality, a digital signal will drop out completely if it degrades too much. In the digital world, it's usually an all or nothing situation. Either the data can be read or it can't.

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