PS Audio PowerPlant P20 better than pure direct AC I get during the night?

It depends on how bad your incoming power is- I wish there was a cheap VAC measuring meter so you could see incoming AC with distortion. 

I have P12 and my incoming AC was 117VAC with 7% THD as indicated on P12- and using this made a big difference- I could sense openness in sonics. This was 6 months ago. 

Now I have a dedicated line into my room (cheap investment) and  I do not find much of difference in using my P12 anymore. When I checked my incoming is 118-119 VAC with 1% distortion - so not sure there is any value-add. I preferred RSA Dmitri to P12 and P12 will be on sale soon. 

Thanks for all your hints.

I thought the PowerPlant was much more an established certainty.

I'm now checking the Chang Lightspeed filters. Which model do you own Don?

Plus does Running Springs Audio have a website? Is it still on the market?

Thank you!
Gianluca

I own the CLS 709 LightSpeed.

I purchased from The Cable Company and got a discount.

They are made to order in Ohio.

The 709 has 2 power amp, 4 low power analog, and 2 digital isolated connections.  Also big surge protection.

Most are shipped to Asia.

Visit the website for info.

Had a P10 thought it was good replaced with High Fidelity MC 6 Hemisphere. Then replaced that with the High Fidelity Pro Power conditioner never looked back