Hi All, I recently purchased a pair of 28's and have been loving them so far.   I just noticed that they both seem to emit a high frequency sound while powered on. If I lower the volume below 21 on the Theatre this sound seems to go away. It appears to be emitting/loudest right where the power cord plugs into the speaker. I found a similar thread on reddit where an owner had them replaced but still was able to hear this sound. https://www.reddit.com/r/BangandOlufsen/comments/sff7x8/beolab_28_high_frequency_sound/ I am hoping others have heard/noticed this as it is fairly noticeable. I can hear it from 10 feet away if I toggle the volume below 21 and listen for it. Any feedback/help would be greatly appreciated as I really love these speakers and I am hoping there is a way around this or a fix of some kind. Thanks in advance!!