I recently had a (new) noise suddenly appear in my system. Quite noticeable from the listening position, it did not get louder with the volume. I checked multiple outside and inside lights, as a while ago, my dethatched garage lights were the culprits. I found nothing and upon checking my power conditioner, I found my plug had come loose and was hanging out a bit. I secured it and no more noise. I guess RF was getting in through the exposed prongs.
Faint buzz in speakers
There is a very faint buzz coming from speakers with amp on, but with no music stream playing. Can only be heard with ear right up to drivers. No buzz with amp off or muted. Decent amp & cabling. Is this faint buzz likely still there under music when it’s playing? Numerous noise reduction devices deployed including dedicated circuit, robust grounding, balanced power transformer, various filters. Thoughts?