Digital signal routers and hubs for receiving and distributing audio and/or infrared signals, namely, digital audio signal routers and hubs and digital signal expansion routers and hubs, amplified digital audio touchpads and keypads, audio source input wall plates, and remote controls for digital signal routers and hubs and amplified digital audio touchpads and keypads, all of which provide plug and play compatibility through proprietary audio signal distribution technology; audio systems, comprising digital signal routers and hubs for receiving and distributing audio and/or infrared signals, namely, digital audio signal routers and hubs and digital signal expansion routers and hubs, amplified digital audio touchpads and keypads, audio source input wall plates, and remote controls for digital signal routers and hubs and amplified digital audio touchpads and keypads, which provide plug and play compatibility through proprietary audio signal distribution technology
Electrical and Scientific Apparatus