August MR220 unusable with an external power source ...

I wanted to use the device in the car, to carry to the car radio. In battery mode that works very well and without any problems. The quality of transmission is more than adequate in the car. The connection to the cell phone works tadelos.

The picture changes dramatically when an external power source is connected. Since the battery does not last forever and needs to be recharged holds, I have connected the device with the included cables to the cigarette lighter. Immediately the sound image and a permantes background whistling and -brummen changes appear ... with the engine off, ignition only.

The same happens when connecting to a small radio device ... therefore I sent to Amazon back August MR220 unfortunately useless ... have the device