I bought the latest revision CUH 7208B, which is supposedly the quietest, the coolers are really quiet, you can hear them slightly but do not strain. But then there was a disgusting crack of chokes. It can be heard even against the background of the TV at a distance of 2.5 meters. It is not very loud, but very nasty and annoying. Sony tech support says this is not a defect. I asked the technical support worker directly, "What should I do, the noise is not loud and in some places barely audible, but I don't like it and it's annoying, should I put up with it and endure it? They answered me -" Well, roughly speaking, yes. "I'm shocked. I am a longtime Sony fan. Starting with the PS1 that I still have! I also have PS3, PS4 fatka. Sony TV, Sony smartphone. And I always liked the quality of their equipment and I was ready to put up with software glitches. But here it is, the last straw. The quality is at the level of Chinese junk, and they consider this the norm and not a defect, this is not the level of a serious Japanese brand. I am disappointed.