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Almost a week back, I purchased a PS Audio DirectStream Power Plant 12 and its been in my system for about a week now. 

The PS Audio DirectStream PowerPlant 12 is the baby of the 3 models they have; the PP 12, the PP 15 and the mammoth PP 20. The prices are:
DirectStream Power Plant 12 - $ 4,999 ... max up to 1000 VA
DirectStream Power Plant 15 - $ 7,499 ... max up to 1200 VA
DirectStream Power Plant 20 - $ 9,999 ... max up to 2000 VA

Having my Devialet 440-Pro CI, initially I was a bit skeptical about buying the baby PP 12 @ 1000 VA but since PS Audio offer a 1-month no questions asked trial at home with a full refund if not satisfied, I took the plunge to order it and install the same in my system. You can read more about these Regenerators here:
https://www.psaudio.com/product-category...enerators/

The baby Power Plant 12 is a sleek yet hefty at 48 Lbs (21.7 Kgs). It is built extremely well & pretty much like a tank ! Here are some pictures of the Power Plant 12. 

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I was pretty much awestruck to see a granite slab beautifully slapped on to the top surface. Exquisite finish !!  You really feel good seeing and hold / moving about this hulk that makes you realise $ 5k was hopefully well spent !!

~ continued in the next post ~
Installing it into the system, the Devialet monoblocks power cords were attached to Zone D thats reserved for "High Current" and the rest of my gear, i.e. Roon Nucleus LPSU power cord, External HDD power adapter, Router power adapter into the other zones A, B and C. 

Here are some screens that the display panel shows you what this Regenerator is doing for you as you scroll thru it  ...  

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There's a built-in scope and it shows you a couple of screens too ... 

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The system sounds "incredibly clean, extra-ordinarily homogenous and soooo real with explosive dynamic behaviour" ... I was just awestruck and shaking my head ... I mean I heard the Audioquest Niagara 7000 and also the Shunyata Denali and thought they were GREAT esp. the Audioquest Niagara 7000 but this is a different animal here ... 

It has lowered my listening levels by 15 dB from earlier settings and now .. more further news here about what MORE this PS Audio  regenerator can do for you ... stay tuned !

This regenerator gives you Sine Wave and Multi-Wave. This multi-wave feature has a total of 6 different flavours ... graded from 1 to 6. All my listening was done with Sine Wave and now I switched over to Multi-Wave ...

When you shift to MultiWave 1, its still clean but very slightly warm or rounded - a touch of analogness sets in ... 
Multi-Wave 2 .. stage grows slightly 
Multi-Wave 3 .. stage again grows bigger, deeper and wider
Multi-Wave 4 : more deeper and wider
Multi-Wave 5 : more warmth ... this is JUST PERFECT .. the soundstage is wide and deep ... haha! Its like LIVE
Multi-Wave 6 : a bit too warm ...

~ continued in the next post ~ 
Here are a few observations thats interesting ... 

Initially, having the 440-Pro CI I thought 1000 VA may be a too small size for my system and I find that even with the Devialet's volume setting at -4.5 dB (which is grossly and excessively loud) that I never listen to, the system does not draw more that 200 Watts from the PS Audio's Regenerator. This means that this 'baby Power Plant 12' is just about more than enough for me (even if I upgrade to 1000-Pro CI) ever !!

Coming back to the sound, the system is now "zero-noise" and its as if you can stretch out and touch the performers with your hands ... you can easily hear extremely low-level details like performers breathing or even gasping for breath etc ... the texture of hands clapping in LIVE concerts are soooo realistic ... it perfectly matches the sonic texture when you too start clapping along with the clapping in the concert and the pitch and texture is just right ... Amazing !!

I ain't going to say much except that I am "rediscovering" my entire collection once again after installing this Power Regenerator from PS Audio. My $ 5k was very well spent and I should have bought it earlier but then .. this new DirectStream versions of Power Plants from PS Audio are stupendous products ...
(13-Nov-2018, 16:16)audio_engr Wrote: [ -> ]... I mean I heard the Audioquest Niagara 7000 and also the Shunyata Denali and thought they were GREAT esp. the Audioquest Niagara 7000 but this is a different animal here ... [/align]

Would you provide more detail about the differences you heard between the three power conditioners you tried? Many of the reviews I've read note some difference in sound such as one being clearer with another smoother, so if you heard a different balance it would be interesting to know what that was. Some have written that one is better for one type of music but worse on another. Did you hear that? If the PS Audio was just better at everything with no downside I'm happy to hear your opinion that way, but more details would be more compelling. Thanks.
@deviousalet
The Denali was more ambient and airy but did not bring forth the absolute "utter real" performers in your room feeling. The Audioquest 7000 and the PS Audio however did and both of these were very-very close in what they did to the sound. I chose the PS Audio b'coz of Multi-Wave setting adjustments that allows you to precisely tailor-in your system to your needs (wherein I dialed my system for max soundstage width & depth along with a rounded analog like tonal character) ... This is something the Audioquest couldn't do ... nonetheless the Audioquest is also a very-very fine piece of gear & I believe the Niagara 5000 at under $4k offers almost 90% of the Niagara 7000 ... which is a great deal IMO.

At the end of the day, I went with PS Audio also b'coz I had a incoming voltage issue from my utility provider and that was the voltage was way high @ 125 to 132 V AC 60Hz. The PS Audio unit solved that problem.

And finally, personally I felt the PS Audio unit was better engineered with information of whats going on available to the user vs. a silent box of AQ Niagara sitting in the rack.

P.S. If you look into my signature, you'll see that I'm an AQ fan but their power solution just didn't do it for me ... I went with Paul McGowan of PS Audio esp. after a telecon with him related to my utility power issues.
Thanks for writing up that useful detail of your comparison.
Very useful and interesting thanks. Agreed it’s great to be able to see what’s going on. I’d love to see what my mains reads but I wouldn’t want to spend 5k on a power conditioner right now whatever the outcome. Sounds like you struck gold in your setup.

Would you mind saying where roughly you live and whether urban etc. I’m guessing psaudios 30 day no quibble is outside uk?

What’s the multi wave logic? It seems you can have the option of pure power but also power with some regulated noise or am I misunderstanding? In any case it’s interesting you prefer the latter.
According to this post on PS Audio's forum, if I understood correctly, MultiWave adds a variable amount of odd-harmonic distortion into the sine wave output.  That would tend to push it somewhat towards a square wave, the idea presumably being that the regenerator can then deliver more net power into the downstream equipment (e.g. to charge linear PSU capacitors) as something close to the peak voltage is maintained for a higher proportion of each cycle.
I read it, interesting thanks.

I’m a bit perplexed by the notion that a piece of kit designed to produce a perfect sine wave - which is claimed to make audio (and video) kit reach their full potential - then adds additional harmonics to make things ‘even better’. I’m sure there’s a logic there somewhere and I’m no electrical engineer.

Looks like the non-US models only have 4 sockets - 1 high power.
30w at idle too. Mmmmm.

I’m half tempted to try one but at the same time think I may be going down a different road soon so will see where that lands first.
This thread has been bad for me :-)
A day or so before Arup started the thread I had a couple of friends over for the evening and part of the discussion concerned power conditioning (I was then using an Isotek Aquarius) and one of my friends strongly argued for power regeneration. Then I read Arup's first few posts in this thread. The next day I borrowed a PS Audio P5 (predecessor to the P12) from my dealer for a day and quickly ended up ordering a P12 which I received 5 days ago. So I'll add my comments to Arup's.

Arup said: "The system sounds "incredibly clean, extra-ordinarily homogenous and soooo real with explosive dynamic behaviour"". I'll second that with the exception of "explosive dynamic behaviour". I'm not saying Arup got that wrong but most of the music I play simply doesn't have explosive dynamics. I can't fault the dynamics I'm hearing, they sound very convincing, but I mostly listen to small group jazz and the music I listen to doesn't tend to deliver explosive dynamics. Rather than refer to that kind of dynamics, the thing I'd stress instead is how solid and natural the weight of low bass sounds, things like double bass and especially the lowest octave of a piano. Before the P12 my system got the tonal character of low bass right but I wasn't getting the weight and solidity of sound that those instruments have. Now I am, and it makes a big difference to recordings of pianos. I also really like what has happened with voices which now sound more natural and realistic also.

Where I will part company with Arup somewhat is in his comments about MultiWave. He likes it and I don't. Yes, I can hear the soundstage effects he hears but I also hear the image of individual instruments and voices broadening as well which makes a singer's mouth sound too wide to be natural and I also hear an unnatural character developing in the sound, a "papery" characteristic is the best way I can describe it if that makes any sense. Sine wave mode sounds natural and sweet, that starts to disappear when I shift to MultiWave and it disappears more as I increase the MultiWave setting. At a setting of 1 or 2 there were some things I liked in the result but I preferred Sine wave overall, when I increased the MultiWave setting to 3 or more I wasn't liking it any more. Given the nature of the effects we both hear on soundstage width and depth, I think that MultiWave is probably something that some people will like and some won't, in other words I think there's a strong element of personal preference involved in how a listener will react to it.

There are some differences in Arup and my setups which may also influence what we respectively hear. There are different amps and speakers, different rooms (acoustics will influence we both hear when it comes to soundstage). Looking at Arup's photos, I can see that his incoming THD figure is 4.2% to my 2.1% and we both get the same 0.1% THD out. He's drawing more power than I do (to be expected, bigger amp) and we do have different line voltages (230V here). The Improvement Meter photo shows a similar needle position to what I see a lot of the time though it moves around quite a bit. Also from a post elsewhere I understand Arup uses SAM and I don't. Given those differences, I think the fact that we both hear very similar things overall, even if we do have different opinions on the value of what we hear when it comes to MultiWave, says something.
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