I got myself one of these and after setting it up properly I must say that while I am a bit disappointed by the reach, I am very impressed with the sound quality for this kind of money (a white label apparently as »C26« sells under various brands and for different prices).
Anyway, the whole setup was a true Linux afternoon, reminding me of my NDISwrapper-days, just like it was 2006 again.
First, It took me a while to get crunchbang to discover the device and connect  (Blueman workes much better as a bluetooth manager). Then apparently I manually needed to let pulseaudio know where to send the audio . Atfer fiddling with some files, pulseaudio was broken, so I needed to reinstall . Finally, the sound was much poorer than via my phone. I don’t know if I overlooked it or if loading rtirq changed something , but in the volume control center of pulseaudio there is a tab called »configuration« where I had to choose »High Fidelity Playback (A2DP)« to get decent sound (instead of »Telephony Duplex (HSP/HFP)« or »off«). Now most of the times it changes to the Bluetooth-device automatically once I switch it on and back when I switch it off. Sometimes not. But hey.
The sources I used were these:
- How to make pulseaudio bluetooth-ready: http://askubuntu.com/a/223203/80611
- How to switch the sink in pulse audio: http://askubuntu.com/a/108882/80611
- How to clean up after you screw up (which I did), i.e. reinstall pulseaudio: http://askubuntu.com/a/435221/80611
- How to improve the sound once it works but reminds you of a telephone: http://askubuntu.com/a/520384/80611 and https://wiki.ubuntu.com/UbuntuStudio/rtirq