Power regenerator vs conditioner

Most of this is snake oil.

They will have no effect on sound, unless you live in Texas :-), or at a place where power variations are more than 10%. In that case, instead of spending your money on those frivolous items, you should sue your power company anyway, to get better results.  In this case, a conditioner is of no use anyway.. and maybe a regenerator may help, if it can keep the mains supply at a relatively stabe +/- 3% of what it is supposed to be.

The power supply, smoothing & decoupling capacitors in your power supply takes care of 99.9% of noise & imperfections in your AC mains.

The rest of the power supply filtering is so that your amplifier does not introduce noise BACK INTO the mains when the rectifier diodes are switching.

Read the section 3.1 of the following CAREFULLY, especially the function of the capacitors, to understand better:

https://www.ti.com/lit/an/snaa057c/snaa057c.pdf?ts=1615230241335&ref_url=https%253A%252F%252Fwww...

I would agree that the power regenerator you mentioned is better than the power conditioner. I am currently using PS Audio P12.

That's what I have. The difference in the sound of my system before and after is not subtle. Every bit of line noise I had before the P12 is gone. An investment worth every penny.

I have a PS audio pp5 I purchased used which replaced a relatively cheap panamax. At first I actually liked the panamax better, the pp5 made the sound very bright even through it may have possibly had more detail to it I could not get past the brightness. After putting on a DIY power cord and replacing the fuse the sound was much better. And then after buying a counterfeit PS audio AC 12 cord on ebay that PS audio was nice enough to replace it with a genuine one at no cost! (who does that?) and installing a SR orange fuse it now sounds awesome. The pp5 has a multi wave feature which seems to make the sound more fuller and not as thin, it comes with a remote were you can turn it on and off from your listening position which makes it easier to hear the difference. 

P.I. Audio’s UberBuss is the best power conditioner on the market. As good as the Shunyata Everest. Likely better; for 1/5th the price. Power factor correction of 1.