I ordered my Turbo X back in early March and received it promptly via Amazon Prime. I waited until my actual birthday to open it and play it and playing it plugged in it sounded wonderful. There was a problem, though, it would not play unplugged. I kept thinking that it was operator error, so I looked online at YouTube videos and comments. Finally, completely frustrated, I called RIVA customer service and realized this should have been my first call. After two simple questions, they said that I needed to send it to them for testing, but to include all charts, connectors and accessories.
After a few days I received an email that it was coming back to me, however I did not realize it was had to be signed for delivery. Had I known, I may have sent it to my business address and received it a few days early. But, no bother, I came home early from work next day and halfway sprinted to meet my UPS delivery man in the middle of my driveway. As soon as I could, I plugged it in and saw the battery icon light up on the back and new this one worked well.
I agree with Moedawg140's comments. This is an outstanding speaker, not only a Bluetooth speaker, but a speaker period. I have not gone through "burn in" or tested it in different rooms yet, but I have simply enjoyed the sound.