I can hear @Palouse opening a bottle of something red, or Paul lighting one up.
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Yet indispensable when needed.
In the mean time Amir has updated the review.
Perhaps just one person should go read it and report back. No sense in putting more money in his pocket.
Or maybe no one goes… Shudder. 
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The updated conclusion:
" Conclusions (updated)
When using the P12 as one would think to do: using Zone D “high current” outlets, impedance is actually worse than mains AC and hence it reduces power output in our test amplifier. When testing using low current Zone A, this doesn’t happen and we get the same power, distortion and noise.
Bottom line is that at worst, PS Audio P12 objectively degrades the performance of some audio products if you use the Zone D outlet. If you use the other zones, it simply doesn’t do anything useful than waste some power, take up space, and cost you a lot of money. Distortion, noise, dynamic and average power of all tested products remains the same as not using P12. This is what the data shows and after two weeks of waiting, nothing has been presented from PS Audio or anyone else for that matter, to indicate otherwise.
And that is Amir being “nice”…
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(post deleted by author)
I wish this forum had a “I don’t like this” button to flag a message…
@Elk, I guess it is best to lock this one up. Discussion has run its course. Nothing good can come out of this now
We did get to see that @Paul is a classy guy, can take a low blow and offered the hand of friendship, which was not reciprocated. Shame really, @Paul has a healthy ethos that people can learn from each other.
@Paul has the joy of personally delivering products to delighted customers in the frozen Mid-West, whereas Amir gets to shout on the internet (bold italics = internet rage). His video with Greg (thanks @straightwire) warmed the heart on a cold day, Greg comes across as exactly the right kind of audio enthusiast.
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That website also gave a very bad review of the Stellar Gain Cell Dac/Pre (like very bad) but its with actual ears I listen to Hi Fi
I went to the ASR site and skimmed the updated review. He re-tested, as requested, using a different outlet, and found that it allegedly didn’t meet the manufacturer claims.
Would be good if PSA could again point out specific flaws in what he did with the retest (like Paul did with initial test) if they have a beef.
Dismissing out of hand and attacking with racially charged defamatory names isn’t a good look by PSA forum members
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I agree with you. We should try to end in this higher note
I went over there and saw a post from a chap probably in the UK and we had a shared experience with SET amplifiers, so I responded to him.
There is a much respected guy called Tom Willis (Art Audio) who has been making seriously good valve amplifiers for decades. He’s in Nottingham, nearby his friend Kevin who makes the Living Voice speakers. They are a great match. I had two power and one phono amp from him. I only moved on because they just couldn’t drive Harbeth. If I’d bought Living Voice speakers I’d probably still have those amps. His USA distributor let him down badly about 10+ years ago and continues to make for the UK/Europe, mostly bespoke. He uses only the best components, the power transformers were made to his specification by E A Sowter & Co., who have a worldwide reputation.
He became an advocate of the benefits of regenerators for his amplifiers and became an authorised dealer, which is why I bought one. Like the person I was responding to on ASR, it was a high powered SET design.
Anyway, someone with a million posts calling himself a technical expert butted in and was so spectacularly rude I was quite shocked. Should have known better.
The amps are back on sale in the USA here: Art Audio – Verdant Audio
The prices are absolutely crazy, they are dramatically less in the UK. If you have a change to hear them, they are sweet.
Such are the ways of the internet. Unfortunately, every online community has these types. Sometimes trolls, sometimes just very passionate people with poor social cues.
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Technically he called out your less than clear statement about whether someone was building amplifiers or buying and selling. He had the same interpretation of what you wrote as I did. His response was not “shockingly rude” by any stretch. He did point out, accurately, that if the amplifier needed the PS to sound better, then that points out to an inherent deficiency in the amp design and also noted there are a lot of bad SET designs out there (there are). Unfortunately, it does not take much knowledge to make a SET amp.
That’s an interesting observation which had not occurred to me before. Immediately, there seems to be some truth in it. I’ll have to think about it in more detail.
I am confused, where does Paul confuse THD and Power Factor in the above?
He is only explaining that when many users draw more current in the peak part of the sine wave it could distort the sine shape.
This thread is circling the drain with the same arguments being made repeatedly, often accompanied by insults. I have cleaned up the thread a bit, but have left most posts even if flagged.
If the quality of the discourse does not substantially improve I will be closing the thread. Please stick to the topic and stop with the personal attacks and condescending comments.
Thank you!
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Again, I don’t see it.
If you maintain a constant AC output on varying loads it has a low output impedance.
If for instance you connect a load that draws 10amps and the output decreases by 1 volt the output impedance is 1/10 ohm.
If regulates better: 0.1 volt at 10amps the impedance will go further down: 0.1/10=0.01 ohm