I bought the 2 echo promotion package with the sub but I split it up and put one of the echo's in a different room. I have, in my living room, 1 echo connected to the sub. It took a little while (maybe 5 minutes, but I'm impatient) after registering the sub to the account to allow me to pair. Maybe it was doing a firmware update in the background I'm not sure. However, once i got it going this sub really cranks for what it is. I like how you can control the basic equalizer settings, this helped a lot. My living room is not huge , maybe 500sq feet. And the one echo and sub was the perfect amount of room filling sound. I may try the stereo pair out, but it may be overkill. Extremely satisfied with it will highly recommend to others. Great value by itself, amazing value for multi echo package.