Just had Sony 65 oled, sound bar and headphones delivered and “installed “ by John Lewis. They charged me £47. The tv is too heavy to do on your own, so help is needed for assembly. That said, technically JL were no use to me as a technical novice. They put the headphone output pin into the input port in the sound bar. They installed the optical cable loosely so it didn’t work properly. They didn’t sort out the sound sync issue. They didn’t tell me that about oled 4K needing a high power hdmi. They didn’t check the broadband connection being adequate for uhd. So as a complete non techie I have spent a week enormously frustrated. I just wanted to buy a tv and watch it. Much better to get someone to install it who knows about the issues related to uhd than just someone who can put a stand on.