my Onkyo 717 receiver has DLNA only and no Bluetooth. DLNA can use only the Onkyo App. If you want to play but more than just the music, it is already difficult.
Therefore've bought times the Logitech adapter. It is actually about 40x40mm small and weighs "nothing". Sits in front under the Logitech logo, a 5mm wide blue LED that indicates how the connection status is. If the unit as stand very high with me, you can not make to the board edge of the adapter cabinet. The LED appears otherwise.
Actually, I wanted to build the adapter behind the plant, ie invisible. Unfortunately, however, then increased the reception. Therefore, it had to forward.
Since then I have, however, no more problems. In a 70sqm apartment I can move around freely and there is no playback problems.
For coupling it suffices once in the middle on the Bluetooth icon to press and seek with his player the adapter and to connect. Thereafter, the process no longer needs to be repeated and the play is always possible when you have Bluetooth on.
Player used me as an example, a MacBook, a Dell laptop, two Iphone's, an iPad and a standard PC with a USB Bluetooth adapter.
All I can say by the faultless operation, it is worth buying this adapter. As Info however still, at Saturn, there is the adapter for 29 euros. For us it was just no longer in stock. Therefore, I then ordered him here.