In the event the audio unit is self-powered, It's a good thought to make certain that it really is powered on, and that the machine's quantity Manage is just not at absolutely the minimum setting The Anker PowerExpand is Unique as it provides an HDMI port that supports 4K 60Hz https://www.amazon.com/AnHome-Multiport-Adaptator-Converter-Accessories/dp/B0CLPGVVDZ/