I made a new HDMI ARC video that addresses some incorrect things in this video! https://www.youtube.com/watch?v=ar2ombRN1UY HDMI ARC is commonly heard and seen throughout home electronics. HDMI ARC stands for HDMI Audio Return Channel. Essentially, it returns an audio signal to a soundbar or receiver (typically in the opposite direction that video and audio would travel through an HDMI cable). Soundbar Channel Numbers Explained: 2.1, 3.1, 5.1, 7.1, etc.: https://www.youtube.com/watch?v=GVogl_7qA5w How to Connect Any Soundbar to a TV: https://www.youtube.com/watch?v=kW1beEUiZGE What most people aren't telling you is that HDMI severely compresses a high-quality surround sound audio signal. So if you are using anything above a 5.1 surround sound setup, then you should avoid using HDMI ARC with your major streaming devices. Make sure you connect all of your devices to the soundbar or receiver and utilize HDMI ARC only when necessary. SUBSCRIBE to the Channel: https://bit.ly/2UyfDlS Our Website: https://thehometheaterdiy.com/