Frustrating ++ I bave 1(yes one} device a firetv. Trying to pair two echo dots with your firestick is impossible, works for one day after spending 2 hours + with their customers service, but next day a) no sound at all on anything B) works on one echo only C) works fine 15 minutes then stops suddenly while a song is playing. I use and highly appreciate Amazon products and services but that is the only reason I rated 2 stars, on it's own it is sadly. The worst.