The High-Definition Multimedia Interface Audio Return Channel (HDMI ARC) is a feature that allows audio to be sent back from a TV to an audio device, such as a soundbar or AV receiver, using a single HDMI cable. This simplifies the connection setup by eliminating the need for additional audio cables, making it easier to enjoy high-quality sound from your TV shows and movies. HDMI ARC is part of the broader HDMI standard, which supports both video and audio transmission. It is commonly found in modern TVs and audio equipment, enabling seamless communication between devices. This feature enhances the overall home entertainment experience by providing better sound quality and reducing cable clutter.