Do You Unplug Equipment During Thunderstorms?

I have a big Siemens  whole house surge protector at the breaker Box ,plus a larger AQ Niagra surge protector , Line conditioner, for my audio system 

on a dedicated line with a 4 wire common ground ,and shielded insulated isolated ground.

Yes, if I am able.  So far so good although the Apt wiring is old and out of code.  Use surge protectors in series and probably have dirty power but music still sounds great.  Moving soon to something in code.

No.

YES - I  ALSO ADDED A DECENT SURGE PROTECTOR - I LEARNED THE HARD WAY ABOUT ELECTRICAL SURGES THAT DAMAGE EQUIPMENT

If I remember, I will, but I normally don't. It is the only way to protect your equipment from lightning.