The range is great: even the living room wall, I had no crashes or loss of quality.
The main reason why I pull a star is the lack of support from multiple devices (and users!)
We have 1 MacBook, 1 Chromebook, 2 tablets and 2 smartphones laying around here. Once one of which someday the Device Pairing made with the adapter, it will in future always try to connect automatically when it is near (ie almost always.) Since the adapter but only 1 device simultaneously supports fight our devices constantly about to connect to the adapter.
This is annoying because when I walk out the door and my friend wants to listen to music, it can happen that you can not just because my phone it steals the connection! I then have to first find out what my equipment because is still connected, and manually go into the Bluetooth settings and disconnect. You get no intelligent error message when this happens; the connection will simply fail. Here the manufacturer has not think.
Another little thing that annoys is the extremely bright blue LED that never runs out. In the dark room while looking TV it is so dominant that we always unplug immediately unplug the adapter, otherwise constantly the wall behind the TV flashes blue. The LED is also continued when I switch the AV receiver, so the device also attracts more power, even if the receiver is in standby (also not great, does not make sense? Because I can hear music so well in stand-by eh) I think I'm just going to the LED, cover in the future.
Overall, however, still 4 stars, because its main function satisfies the adapter definitely like play music in high quality!