The Bluetooth receiver is a 5V Micro USB power adapter supplied suitable for UK! An adapter in earthed or Euro plug is not in it. This is not mentioned in the article description! Annoying also was that the product was offered cheaper, three days after my order to 10 on Amazon. Originally I therefore wanted to return the item at Amazon. I then decided to go after me, a little more accommodating Amazon credit offered to keep the receiver. Then I bought a travel adapter from standard UK to Schuko standard. The Bluetooth receiver has excellent in the apt-X audio mode features. The optical digital output can be directly connected eg to a DAT recorder or an DA / DA-DA / AD converter. But the Standard Mode brings a very high-quality listening experience. I have tested the transmission with a netbook and as WinAmp player. The MP3 files were all 320 kbit / s 44.1 kHz sample rate and high quality codec of various genres. At my Nearfield Studio Reference Monitors, no difference between Bluetooth and cable transmission was observed. The range is also very good, the reception is over several floors in my house. All in all, except for the trouble with the power supply and repeated contact with Amazon, a good buying decision.