Protection needed for amp?


I live in N. CA, where power outages have become more frequent.

As a result, we've had a propane back-up generator installed that comes on automatically when the there's an outage.

Question: If my system is running and power is suddenly cut off due to an outage, then suddenly restored by the generator, does this pose any danger to the amp?

My recently purchased Hegel H390 is the most expensive component I've ever bought and I'd prefer not to replace it.

If it sounds like I know nothing about electricity, it's because I don't. 

When I power up the amp, there's always a delay, then a loud click, before it's ready for use, whatever that might suggest. 

Thanks in advance! 

 

 

stuartk