The full HD quality for the picture on a LED TV does require a good HDMI cable like the cmple.com hdmi cables, for example. Such a cable certainly can give many differences from the image quality which is produced by the RCA cable as it usually contains a lot of noise and is not optimal. For a more optimal quality of the picture and sound to appear on your LED TV screen, you need to select an HDMI cable with a good quality as well.
HDMI os the abbreviation of High Definition Multimedia Interface and is a standard of the electronic industry to connect high-definition video and audio devices. At the present time, you can find a lot of examples of the use of HDMI cables so that this cable actually represents the existence of RCA cable which is usually 3 in 1 and other wires of different uses. An HDMI cable is a single physical cable, the contents of which already have grooves for audio and video, the use of digital multimedia as well as the multichannel feature.