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Avr analog ground8/30/2023 ![]() ![]() Eventually, receivers were built to route video signals as well as audio.Īs digital devices became more common, receivers started to serve a more primary role as the central digital controller of a home theater system. The inputs and outputs were primarily analog, except for a optical audio connection such as a Toslink or S/PDIF port. History of AVRsĮarly receivers were not called AVRs since they only handled audio signals. Smart TVs are an exception since they are both an input device (sending audio and video data to the AVR) and an output device (displaying video from built-in apps or other devices. In a modern home theater, the TV may serve as a monitor since the audio is processed by the AVR and video input is handled by a cable box, Apple TV, or another device. The video is typically output to a television. The audio is routed to speakers, such as Dolby 5.1 surround system (five speakers plus one subwoofer). In a typical home theater setup, all devices are connected to the HDMI ports on the back of the AVR. AVRs are also sometimes referred to as "amplifiers," since one of their primary functions is to amplify an audio signal before sending it to the speakers. It can receive signals from connected components and route them to different devices. Stands for "Audio/Video Receiver." An AVR, often called a receiver, is the central routing and processing component in a home theater.
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