[header] How to buy hdmi cables [title] Buy hdmi cables when you need a top quality signal. [substeps] Hdmi cables send an uncompressed signal, meaning you don't lose any quality as it travels through the line. When signals go through the compression/decompression process, the signal can degrade. 
However, that does not happen with hdmi cables. [title] Use hdmi technology to accommodate copper cables at lengths up to 50 feet (15 meters) without requiring a repeater or an amplifier.