Power conditioners and power regeneration

I have my surge protection at the breaker box a Siemens 

then vh audio has a great one with surge power factor connection you connect just on your dedicated audio circuit .

breakers should be changed every 3-4 years ,unless you have silver plated copper contacts which I have on 2 breakers since the pandemic a5 industrial supply house no longer can get ,from Germany ,but by far the best $50 each at the time 

regular copper oxydizes ,and must be changed for it corrodes.

Interesting discussion. I use a Furman Elite 20PFi, but it sure seems like the quality of my sound varies by the time of day and I wonder if regeneration would offer improvement. I was researching Merason DAC's, and by accident came across, Maruson power products. What are thoughts on using something like:

for source devices? Granted you would need some outlets downstream from it, but pricewise it seems like a pretty good deal. Any thoughts?

I have been using an old Shunyata Hydra 4 for years. It also has surge protection. Love it. I sometimes find that certain mixes of cables to the wall plus cables to the conditioner can get a more perfect sound. My system is also on a dedicated line with Hubbell outlets. The Higher end Shunyata cables also have built in filtering that is not overbearing or dynamics blunting.