I just got mine in. To be honest I am disappointed in with the sound of the device.
It does not put out nearly the amount of bass I was expecting. Overall the sound quality is good, but my Bose Soundlink is better with lows. This thing does however have really good mid and highs levels, but there is an uncomfortable amount of distortion at loud volumes (due to the distortion of low levels). This isn't too unexpected because this thing is driven off 2 mini subs. Overall the bass is not good even before you get to a level for distortion.
This thing gets LOUD too. I was impressed with the volume it can put out, however this seems pointless when you consider the amount of distortion you can hear.
The speakers have an on/standby switch on the back of the device that has to be on if want to speakers to work however the charger works regardless if the speakers are on or off. This is a giant plus.
I was also hoping the NFC connection would automatically turn on my bluetooth connection however this was not the case. You need to turn on bluetooth on your phone if you want through the speakers and then turn it off if you want sound to return to your phone. This seems pretty obvious, but I would of loved it if I could drop my phone off on the thing and the sound is automatically transferred to the speakers, and if I pick it up the connection automatically turns off.
Now I have to decide if I want to keep this as a glorified alarm clock if I want to return it. For $300 I am tempted to take it back because I do have a soundlink already, but it is a cool device. $200 would of been a much better price point for it.