All of our modern electrical and electronic devices can be damaged, sometimes beyond repair, by surges from the main power supply. These just fry any electronic components.
It's not something that happens very often, thankfully, but when it does, the results can be devastating.
The solution is to connect any of your expensive gadgets using a surge protection power strip. These just fit between your electrical devices and the main power supply and will protect against any abnormal variations in the supply voltage or power level.
Surge protector power strips retail for somewhere between $10 and $25 as a rule. When you compare that to the cost of the devices which they protect, it makes a lot of sense to use these.