By adding the active technology to our extended length HDMI cables Ethereal is now able to provide a very high level of assured High Definition performance. Starting now you can do your long distance installation without having to worry whether or not the system will work. Active technology does a tremendous job of repairing the signal faults caused by copper cables. Copper cables are certainly adequate for passing low frequency signals (standard Analog and traditional Digital audio formats). High frequency signals such as those used in HDMI High Definition Video and Audio do not fare as well. The amount of this attenuation over longer distances is what causes the vast majority of grief that is faced in custom A/V installation today. Consequently providing a readable High Speed signal at the end of the line has in the past required a number of different “little black box's”. The active cable technology removes the distance roadblock by rebuilding the high speed data to a display readable quality. Multi-Layer Shielding Multiple layers of shielding prevent electromagnetic interference to maximize noise isolation as well as protecting the other components from HDMI High Speed emanations. 24K Gold Plated Contact Connectors It is certainly worth noting that not only do these cables look great, they are also designed with the best materials and tested for heavy duty use to deliver stunning picture, sound and control year after year. We use 24k gold contacts ensure the highest possible connectivity for the best signal integrity, they are also corrosion resistant and provide maximum signal transfer over the life of your system. Audio Return Channel (ARC) The incorporated Audio Return Channel provides the ability to send multi-channel audio from the display to the surround processor (dependent on the equipment being ARC enabled), reducing cable clutter. CL Rated This cable is CL rated for in-wall installation. Digital Performance Labs (DPL) Tested These cables are DPL Labs (www.dpllabs.com) tested to ensure long term usability and performance. DPL testing clears away the “smoke and mirrors” common in the HDMI™ cable business by creating a fair but tough comparative standard against which all HDMI™ products can be tested.