Creative A250 buzzing when turned on

My Creative A250 set started buzzing a few days ago. Or at least that’s when I noticed it. It happens as soon as they’re turned on. Nothing has changed with my wiring or system.

What could it be?

I can write a huge article about it, but I would keep it short - dry capacitors. It’s a comon thing. As they age, capacitors dry out and change their capacity value, so that mess with the entire system and creates that slight buzzing when idle…
You can try and replace all electrolyte capacitors, or if it isn’t too distressing - just accept it…

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