The application for this product is to allow multiple (up to four) HDMI2.0 sources (up to HDCP2.2) to be used with a current-generation UHD4K display capable of handling HDCP2.2, while transferring the Audio Only portion of the source to the Audio playback system (external surround system) for a system that is not capable of handling the HDMI 2.0 and HDCP 2.2 signals. Without this device, TA says that use wouldn’t be able to listen to the higher-level audio streams, which are only available from the HDMI signal path. In fact, attempting to connect any HDMI2.0 signal (audio or video) into a legacy AVR/Processor will yield no output to the display or speakers. An Installer can integrate the operation of the HDS-42AVR via IR and RS232. It lists for $449. Here are more details.