With this HDMI audio extractor 4K, you connect HDMI sources (Apple TV 4, Chromecast, Wii U, media player) without a dedicated audio output to your audio equipment. The Connect AE24 UHD 2.0 supports 4K, HDR and ARC. The unique HDMI audio output without display function prevents compatibility problems with your current AV amplifier. Use the ARC function of a TV, even when your audio equipment is not suited for it.