AC Regenerator

However, it still sounds better late in the evening than in the daytime. So, by audiophile standards PPP is not good enough. I'll probably upgrade to P5 or P10 at some point.

Clean power, regardless of how you accomplish it is to me the largest factor in a musical system. Put another way, the further up the line you improve the signal the greater effect you have throughout the system. I use balanced power throughout and it's great. I'm sure the PS Audio is great at this also. Reproducing music with dirty power is a compromise throughout. 

Just to mention all is not perfect in the regenerator world. The very small but forgotten problem of some tube equipment cannot use the PS Audio balanced power/Technical power output. Directly heated triode just cannot be used with  it.Then a few pieces of equipment DIED when the various multiwave features are used. (now THAT may be solved with newer models? But with older models the various multiwave modes CHANGE THE actual AC VOLTAGE to as high as 130V measured, even though the meter on the machine says 117. To read up on that you will need to Google some.
These turn into problems few, and far between. but have happened.Also the fact upping the AC frequency with older PS Audio machines may cause problems with the equipment connected. usually just lowering the AC frequency back some is all that is needed.Sadly most of these things are not really written about on the PS Audio website.    
I like my PS Audio P600 as much as anyone. But it is changing things, and you should know what it is doing, not just think it can do no wrong.

Aquired the most recent PS 15 Direcstream PowerPlant and repeat the previous messages.  Just sounds better all the time.  The newer 12, 15, and 20 are pricy but are more efficient, less heat, and bigger headroom.   With that all said my guess is their are some good deals to be had on the recent "older" generation 3, 5, and 10 PowerPlants.   I live in a condo complex with a lot of dirty power.   THD is going from 3.0% to .1%.   

I am so glad we have clean power in Australia: 240V +/- 2V and 50Hz +/- 1Hz.

In any case, I use a Monarchy Audio AC Regenerator for my line stage and to be absolutely honest, I can’t tell any difference with it in or out of my system. Having said that, the Regenerator absolutely bleached the sound of my 6W/channel SET power amp and equally dried out the sound of my Leben phono stage.

If you have "dirty" power then maybe, but for mine, power conditioning otherwise is a marketing beat up

Also, I thought quality components had quality power regulation as part of their circuitry?