PSAudio is not being even remotely transparent. They in fact tell you that you NEED this product. In their words:
"This is one of the most important pieces of audio equipment you can own, building a firm and reliable foundation for your system that will serve you for years to come."
"With your system powered directly from the output of the P12, you can expect far better micro and macro dynamics, as well as cleaner, lower background noise."
The latter is very easy to test and measure yet nobody can measure any difference in noise floor from any device plugged into the P12.
"The P12 takes your incoming AC power, converts it to DC, and then regenerates it, producing new sine-wave-perfect, regulated high current AC power."
We can most likely even deduce that they are even lying how the device even works, Amir clearly showed the output from P12 as having the same exact profile as the raw line power. If it was actually pure you would just see 60Hz on the spectrum analyzer and everything else would be flat yet the output of the P12 looked exactly the same as the raw power.
I can't see how anyone with any sort of intelligence (and conscience) goes to their defense and doesn't see this as an example of false advertising and snake oil.
Let's be clear here, we have one guy "LarryRS" that is defending this product. I'm willing to bet he purchased one of these or similar things from PSAudio or he has some connection to PSAudio that he is not admitting to. The evidence is just too clear for anyone unbiased to not see this for what it is, a sham.