There was noise feedback on charging which I isolated to be caused by the cable. They did not replace the cable as requested. I was to pay for the replacement. The sound produced by the Ba300s is as good as bad guy says with m11. I wish there was a way to know how much charge was left in the battery say a warning sound to say when the battery was low. Another problem is when charging the Ba300s the power from plug does not match the requirements of the devise. So if the battery is flat plugging in the charger will not power on the device until minimum charge is met. For the money I expected a better device given that this seems to be the second generation of this device.
Good Quality