So I just got mine yesterday. They are great. I too had the problem though, which I think arose when I went to sleep mode rather than full power off. DLed and loaded the firmware update and then I was fine. It happened again today and I chatted (much quicker support than phone) with customer suppoer (Zac was my rep and he was super helpful). They started the process to send me an exchange (which was great considering I purchased through an auth dealer on amazon). Literally about 30 min later I found this thread and the power off and pull plug/reset/plug in/reset and it was fine. I contacted support again to cancel the exchange. If this happens occasionally due to finicky BT, then I can live with that. If it becomes persistent, then I can choose to exchange at that point (within a year for the amp warranty). And if beyond and they won't replace, I can always use the portable BT adapter I have and use that with the AUX input on the speakers.
