Simply with your mobile device (in my case: Nokia Lumia 920, BlackBerry PlayBook, Lenovo Thinkpad) chilling on the couch / to bed, turn on Bluetooth and enjoy music. Each works properly, following it should however be noted:
1. When I had first new notebook Bluetooth driver install, the default driver did not support the protocol.
2. volume on the playback device turn up the volume! I've learned that if you play at the end device does not put the volume to maximum, diminishes the quality noticeably. Particularly striking was the notebook. Between 96-100% volume the sound was very good, once you went below 94% it has been noticed a non-linear decrease in quality immediately. The BlackBerry PlayBook turned in connection to this adapter by itself to full strength, you could here not turn down the volume. So turn up the volume on the mobile phone / tablet / PC fully and then regulate the controlled boxes.
Taking into (i) the aforementioned item 2, then there is the sound quality no complaints. Initial fears that only poor sound comes across not been confirmed, you can enjoy the music. In a direct comparison (control cable Bluetooth) to the pit (Edifier c3) the Bluetooth variant was a tick quieter, but not qualitatively worse.
Just about this adapter is suitable for music, too bad it is suitable for movies / games etc. In the transmission occurs at a minimum delay (with me about 0.2-0.5 seconds), but the case of films, of course, already significantly interfere , That, to me, however, irrelevant because I use the device to listen to music mostly. Should even a movie be watched on laptop, this is anyway connected by cable to TV, so the boxes are then covered.
From me a strong buy recommendation.