I just bought a Astell&Kern AK XB10 Bluetooth aptX HD Adapter with DAC Amplifier. I bought it with a pair of Astell and Kern earphones. What I didn't know that there was one included with the earphones. So I have one going for a song (pun intended) Turns any earphone or headset into Bluetooth and increases the music quality. By a good margin. Anyone fancy it for £80 less than half price from most retailers.
