I am wondering about the possibility of positively affecting the sound stage. My power company is notorious for surges and outages so it’s not just aurally motivated, but protective as well. I am curious, if it’s all snake oil, why would people invest thousands of dollars for conditioners and power cables?
People invest thousands in conditioners and power cables because of their audiophile nervosa/insecurities and placebo effect. They also have more $$$$ than they know how to spend. First World problems. Manufacturers take advantage of this fact. If power conditioners really make such a big difference, why do companies like Parasound not produce any?
I’m not saying they can’t make a small improvement in a home with noisy AC, but most noise is component induced --from noisy transformers or less than ideal grounding schemes. Incoming AC is rarely the true culprit.
If you’re most concerned with surge protection, get a Brick Wall:
https://www.brickwall.com/pages/the-worlds-best-surge-protectors These don’t rely on MOVs and will protect as well as any four figure "conditioner."