We had bought a new TiVo and a new TV and for the lif of ours we could not pinpoint which one was malfunctioning when the sound would dip during different times of viewing. Turns out these HDMI cables are the problem!!!! … You have no idea how much time I spent trying to troubleshoot the poor new devices. For having put through what I have gone thru I would rate these as garbage!!! Grrrrr!!!