HDMI or "High-Definition Multimedia Interface,” is an uncompressed digital audio/video format that has become the standard connection for HDTVs. A "passive" or non-amplified HDMI cable, can achieve distances of 40 to 50 feet. Beyond this, an "active" cable, such as an EQUALIZER or REPEATER cable, should be employed in order to deal with signal loss. All of our HDMI cables are "high speed" Category 2 cables, and are certified to the industry standards.