About this item HDMI Audio ExtractorThe HDMI audio extractor can extract audio from HDMI signal and transmit it to an AV receiver through optical or 3.5mm Cable. (Note: Devices do not support ARC and eARC. TV is not supported as the input source, otherwise, the product doesn't output video.) 3 modes2.0CH, 5.1CH, and PASS mode. For 3.5mm stereo output, please use 2.0CH mode. For optical output, please use 5.1CH mode. If you find that no audio and video signal is output in the first two modes, switch to PASS mode. 4K Ultra-HD with HDMI 1.4VThis HDMI audio converter supports up to 10.2G bandwidth, HDCP1.4, and 4K@30Hz RGB / YUV4:4:4 Ultra high definition image quality. The optical output supports DTS 5.1, and the 3.5mm output supports PCM2.0. The audio splitter does not support 7.1 channels. Note: Fire TV, Apple TV, PS4/5 etc. only support 1080p format signals and do not support 4K. Low energy consumptionThis HDMI audio splitter has low energy consumption, requiring only a connection to t