lightning storm

try taking the penny out of the electrical socket

Not just switch off, completely unplug. I lost my Luxman amp, Bryston CD player, and Martin Logan speakers in a lightning incident. Fortunately homeowner's insurance covered most of it, and Bryston stood by their astonishing warranty, otherwise I would have been out a very significant amount of money

Had a lightening strike that came in thru my dog's "invisible fence". Took out my computer and Bryston amp. Bryston service said it wasn't covered in their warranty BUT "this time" we'll fix it.  I'm a Bryston fanboy for life . . . but I do have a whole house and a protected separate circuit for my toys now. 

Good idea to avoid showers / baths as well.

My system was hit by lightening, it traveled through the coax cable line into my video processor via HDMI and then hit my projector. I had everything on quality surge protectors but it didn't matter. The electrician I took the equipment to for insurance purposes said that lightening likes to have a path in and out so having things plugged into different wall outlets is an issue. I have since purchased a PS Audio P15 Powerplant power regenerator. Not only do I have zero static on my line I power everything from one outlet (yes it is a pain to have a 50ft cord going to the projector along the ceiling in a wrap with the HDMI cord). The pool of capacitance it has is fantastic and it lowered the noise floor, the base is much more effortless, and the colors pop on the projector believe it or not. Plus there is a huge quality of life bonus, I've programmed everything to turn on and off in the correct order, what a luxury. Now the system is unplugged all the time, I check for any weather before hand with "The Weather Bug" app which tracks lightening in real time. If I sniff the ozone of a storm the system stays unplugged, as well as the computer. I'm playing chess that evening on my Chessnut, no music or movies for me!