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The Amazon Echo Sub has the potential to be a decent subwoofer to add to your existing Echo setup, but it won’t be easy or quick to do so. This product is a great example of how smart wireless technology can be great but is an absolute nightmare when it doesn’t work. Unfortunately, the Echo Sub has several limitations which prevent me from recommending it to most users. The setup and pairing process can be as simple as a few clicks, or, as it was in my case (and very similar to other Amazon customers), it can take a few hours of trial and error, troubleshooting, and frustration before you can get it to play nice with your other Echo speakers.