Just as I had imagined: 3.5 mm jack of powered speakers connected to the adapter, both power supplies (from the speakers and the adapter) to the power outlet, then Bluetooth connection with my BlackBerry - done. Am impressed with the installation speed - manual is not necessary - only the password (0000) for the Bluetooth connection I had to look up. The music player can be operated as usual, the volume can be adjusted by BB. First impression: Best buy recommendation. I can not say too much about the sound quality, except that it fully errüllt my demands on my small powered speakers. Other connection options (another phone, connect to laptop) I will try in the next few days.