Cat5 balun kits allow you to extend your electronic connection via cat5 cable. This type of extension is often preferred for high quality visual equipment and speakers, as it maintains a high quality connection over long distances. These extensions come with two boxes to allow you to switch from the source cable to cat5, and back into the source cable to plug into your electronic device. With reliable brands like Avico, Shinybow, and OEM, these kits can maintain quality in connections over hundreds of metres long. Wall plates and AV receivers are also available, and recommended for complex or professional home cinema systems.