Advertisements Depends on what sort of "quality" issues you're having. Are you talking about like pixelation and breakups? If so then that could be the TiVo tuners. If you're talking about like the quality of the picture, like softness, contrast, etc... then it's unlikely the TiVo tuners are causing that. TiVo just records the digital stream as-is. Now there is some post processing during output depending on the settings, and your TV could be set differently for HDMI then it is for tuner, but those should all be fixable.