Use the Logitech BT Audio Adapter with my iPhone, MBP and a Nexus 7 and am thrilled with the surprisingly good audio quality. Quite clear recommendation! Only downside is the BT Audio Adapter connects instantly when BT is on. Good thing in and of itself, only this is connected to the system and plugged the power supply of the BT adapter, has the receiver bspsw. stand on "Radio", you can not get with when a SMS, etc. a call arrives on the iPhone (handset), since it is connected in this moment with the adapter. Now led me to the BT adapter switch only when necessary.