This two outlet surge protector looks pretty simple and may be a really good thing. I take heart to it being in your systems given all the stuff you’re into. Sound degradation being of concern. It’s only a couple hundred bucks and available via Amazon. How could anyone go wrong. If this works out what a peace of mind you created.
Personally as I think about it more and more people who plug expensive amplifiers directly into an outlet are not really that smart myself included. I knew someone just a couple months ago who had a very expensive 300 W tube amplifier and it got hit. That’s scary crap. It only has to happen once.