I've been using a Zero Surge 8R15W-I for the past 7 years and find it to be non-intrusive with source components. It gives me a peace of mind, but I question whether it's necessary as I live in the SF Bay Area and lightening strikes are extremely uncommon. I plug my amp directly into the wall and haven't had any problems doing so.
The Zero Surge website has good information:
https://zerosurge.com/surge-suppression/
The Zero Surge website has good information:
https://zerosurge.com/surge-suppression/