Products like this
https://furmanpower.com/product/20a-power-conditioner-with-lights-voltmeter/Are good at keeping your gear intact. In my work with portable live sound systems, we used various models in every rack. Besides being decent power strips, the surge protection and over-voltage shutdown have saved gear from generator problems more than a few times. They are not cheap but are worth it. There’s one in my station’s rack and another on my workbench. as well as in my PA system racks.
Note that there are many brands and models of "surge supressors" that knock down spikes, but many provide no over-voltage protection. Read the specs before spending your money...
Ed