Like you where I dwell the power is poor.
First off a whole house surge protecter was installed when after a brown out knocked out all the AC unites and the septic pump failed. Good times in a California valley summer. Several others have counseled this. Hint. Hint.
If I could have replaced interior electrical lines I would have. Everything thing from the wall socket out was done. Socket, power cord to power conditioner, and power cord to amplifier were all part of it.
+1 on twoleftears. An inexpensive power strip isn’t going to cut it.