The connection could not be simpler: plug adapter into Aux inputs of my older Phillips stereo system, connect power supply adapter and power outlet and you're done! Smartphone Bluetooth enabled cell phone and finds the adapter immediately. A second time tried with the iPad, also no problem.
The goal has been reached, the music can now be conveniently controlled from the couch where else in the room or on the stereo. Especially for me as Spotify users Extem relaxing :-)
After repeated comparison between Bluetooth and Aux cable connection no loss of quality can be determined, the sound is perfect!
Conclusion: The product holds absolutely delivers what it promises, I do not personally thus the price / performance ratio absolutely ok (subject, of course, that the performance also is permanent, but there is no bad experiences were so apparently made). So I would definitely recommend this product further.