Power regenerator vs conditioner


If the goal is to improve the sound quality (soundstage, detail, dynamics, etc) and the issue is "noisy" AC, it would seem to me that a power regenerator such as PS Audio P15 would be far superior to a "conditioner" such as a Shunyata Denali or Hydra or Triton.  Is this correct?  Thanks .
craig
Since I’m a hobbiest drummer I only buy power conditioners designed by other drummers. That leaves me very little choice... drummer/ power designer Garth Powell. Seriously though, in my main system (TAD CR1’s /BHK300/Atma MP1) I use the Garth’s Niagara 7000 and really enjoy what it does on a micro and macro level.

Due to the disaster called 2020, I found myself away from home for a year and put together a small system based on a Hegel H190 and LSA Statement 10’s and didn’t want to spend a lot on conditioning. I ended up with a used Furman Ref15 fed by AQ’s latest bottom of the line power cord that Best Buy sells. (Both designed by Garth)
I really like what it did for the system and and at a very low cost. Incidentally I also picked up the AQ Powerquest 3 to compare with the Furman, which while quite old at this point (although almost identical to the latest 15i) I much prefer the Furman since it has energy storage for instantaneous current, similar to the Niagara.

Having tested and owning 2 conditioners that store energy to deliver greater than what the wall can for transients, I wouldn’t buy a conditioner without that feature.
I don't think this discussion will reach a conclusion. After all, everyone has completely different preferences for sound, and it is impossible for anyone to try every power processor. But from my own experience, I would agree that the power regenerator you mentioned is better than the power conditioner. I am currently using PS Audio P12.
The AudioQuest Niagara 7000 is seamless and (for me) has done the trick. It does not touch the sound. Have compared with direct into wall and all’s well. The AudioQuest Niagara 5000 should preform the same as the 7000. The price for the 7000 has gone up up up. 
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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...