The SiliconDust HDHomeRun CONNECT DUO is on sale for $69.99 and the HDHomeRun CONNECT QUATRO is on sale for $99.99 at Best Buy. The former is $30 off its regular price, while the latter is $50 off. These are both the lowest prices that I’ve seen, but I don’t follow this product too closely, so it may have been cheaper in the past. HDHomeRun is a device that allows you to watch over-the-air channels through your Fire TV and other streaming devices. It’s essentially like a network connection for your HD antenna. You can use the official HDHomeRun app for Fire TV to view the content, or use a number of other supported apps, like the Channels app, MrMC, or Plex. The difference between the DUO and QUATRO is that the DUO has 2 tuners, while the QUATRO has, as you may have guessed, 4 tuners. The number of tuners determines how many channels you can watch or record simultaneously.