manisandher wrote:

I'm assuming when you talk about the PP2000 here, you mean in AC regenerator mode. So what about in battery mode? Is it 100%, i.e. totally equivalent to "super electricity days" in your estimation? The reason I'm asking is because I'm having a dedicated AC line installed. It would be great if I could measure the success of this project by comparing the new line to the PP2000 battery.

Paul S wrote:

Can you share the stated output distortion of the newer unit? Best regards, Paul S

Romy the Cat wrote:

I would say that nothing has changed since last night. The sound still a bit harder then I would like it to have. This hardness is very interesting and in way different, it is not type of the hardness that I would discard as “bad” attribute of sound but it is also not something that I would do intentionally. I am still on a fence with the result and will see what happen later.   What however is the most fascinating is why bass became so much greater. I would still call this new bass too hard bass but at the same time it is more extended and more articulate., I would say even a bit more over articulate then I would like it to have. If I have this sound I would load the output tube at my bass amp for 25%-50% harder. Thinking why I got the change in bass I do not see answers. PurePower people insist that one of the reasons why their regenerator sound so good (when it works properly!) because it capacity to react to ultra short reaction of current. So, presumably with core capacitance the energy storage on buttery become able to give away more instant current.  This in a way imposable as PP2000 is by topology not a able to give the instant current.  Also, my system operates in class A with current draw is absolutely steady, furthermore the current is stabilized by a lot of input chokes. So, why the caps affected sound so much? I do not find any sensible explanations.

Ok, there is nothing dramatic in there, the new days bring new success and failures for electricity battles.

There are some good things. Since I put more caps to one of my new fixed PP2000 I did not have bad electrify days. So, it is very possible that the tweak might work out effectively but a week is too short time to make any more or less generalized concussions…. Again if I had the bypass switch…. The absence of the bypass switch really drives my nits!

The dam UPS have officially lost one of my PP2000 that went to PurePower to repair. It was insured and PurePower promised to replace it next week but the units the UPS lost was my best sounding PP2000. Why they did not lost the upgraded unit that still sound very bad even after the repair? PurePower claims that all this following use will be sound the same and that “we are able to supply endless amount of identically sounding regenerators”. Well, I’ll believe what I see it, or on this case hear it. The sad past the on the unit that UPS lost I glue under the bottom the special mark to assures that this best sounding unit never will be confused. And the assholes have lost it! What a pity!!!

Another disappointment is that I return back to revised Avicenna assembly. The fact that return to Avicenna is not so bad but the fact the I burned it’s transistors is depressing. It is not big deal, I will replace them but me burning the Avicenna’s output stage because of my idiocy will not be the most glorious chapter of my autobiography.  The goo part that I have setups my audio working spare in basement: very comfortable.

This week I will be sending out to PurePower the “upgraded” PP2000. Over that last eek I made two more attempts to use it and in both case it produced absolutely revolting compressed b/w sound. I have no idea why. The November Problem that the unit had was fixed by PurePower, and measurement confirmed it but it still has no sound. I have no idea what PurePower will be “fixing” if it has objectively proper operation. Mystery…

I really wish this saga with my 3 PurePower regenerators be over. I never thought that it will be for 6 month ceremony with unknown outcome. I do not do anything with my ULF channels until I have 3 properly performing PP2000s as I feel that driving everything from one PP2000 vs. 3 PP2000s would screw the ULF results.

joaco wrote:

hmmm sorry Romy for the lost of your pp2000 .... I would like to share one opinion from a technician that lives in Japan and lived in Chile . We were discussing the issues of electricity and he said "Lines in Chile are poor quiality , cables are too thin from the street and from houses" so you change the cables that come from outside and the ones inside your apartment and ask the electricity company to supply you 440V and then buy a good galvanic isolator transformer with step down , now you can use clean , 220V energy . I can understand the use of the isolator transformer but asking for 440V and the step down ?? I do not know , but audiophiles in Japan are fighting the electricity problems asiking the company to supply 220V and then they use step down transformes to 110V . Any conclusion in this aproach ?

oxric wrote:

I have come across this company mentioned in a preview on '6moons,' and the information on the company's website suggests that this is in theory really a complete solution, and one that makes sense even to the non-engineer that I am to AC problems.   http://www.equitech.com   http://www.6moons.com/audioreviews/equitech/1.html ....Rakesh

joaco wrote:

Oxric , the company was mentined before , but I think was not analized in this same thread and briefly another one with a very similar aproach "Torus" .

romy wrote:

It would not surprise for anyone that I do monitor what I going on with power treatment devises out there. Today I was reading Doug Blackburn’s review in Soundstage about Torus Power Conditioner. http://www.soundstage.com/equipment/toruspower_rm15.htm The Torus Power Conditioner is a plain-vanilla isolated transformer, similar to Equi=Tech. The Equi=Tech uses Maryland Toroids transformers; Torus uses Plastron transformers – big freaking deal.

Last week PurePower send me back my “upgraded” PP2000 unit that eventual get right sound. I did test it running my entire playback from it and found it usable.  I found that there was VERY minor difference in sound between them, so minor that I would never consider it as a problem. So, me second PP2000 is fixed.

So, I plugged last Friday all my front-end along with my ULD amp to one PP2000 and my both tube power amps to another verified well sounding PP2000. On Sundays when I have a day-long ultra-successful marathon with my ULF I noticed that I got in way brighter sound, it did not bother me too much. Then I asked myself where the brightness came from? Upon further research I realized that the brightness came from …. PP2000.

The PP2000 #1 forms fine what all system plugged into it.  The PP2000 #2 does the same with let consider identical sound. The half and half system plagued to different PP2000s pick up brightness and not only brightness but what is the most important some upper range compression. I shall mention that both PP2000 are plagued with all 3 pins to the very same power outlet in the wall. Upon further experiments I connected all system into one PP2000s, got fine sound and then just turned on and off the second PP2000s. The brightness of sound on the first PP2000 was exactly followed the power switch on the second PP2000.

So, what the concussion is. It is known that PP2000, as any switching devise, inject a lot of noise into power line from where it sources power. Apparently the PP2000 own filtration can’t handle the noise from the second PP2000. That sucks.

So, I wonder how to use second and preferably third PP2000. I need somehow to decuple their mutual input noise. It might be a good idea to put them both to different halves of 240V but it might be bit dangers as if my neutrals get switch side with hot then I’ve have 240V ingenerate my whole system. So, I wonder what kind AC decoupling I might use. I need some kind AC diode that will work at low frequency… I do not think anything like this ever exist for lower them a few megahertz….There is another interesting question: does this effect with PP2000 mutual influence to each other  will exist with all condition of electricity in the wall?

Romy the Cat wrote:

Rakesh, Equi=Tech is a know player in the fields of audio electricity. Back in 2001-2002 I had 3 of the Equi=Tech transformers. I was not pleased with results. I do not like the balanced operation for power lines – in my view it does something with harmonics that makes sound less potent. Sound become to behave like Chinese food it feels like I filled up but you then I feel hanger soon. Also, the melody becomes less memorable with symmetric power. The Equi=Tech worked very nice…for the first day… and then each day it was less or more effective. There were some days where it did not help at all. The Cat

oxric wrote:

Thanks for sharing your experience, quite damning, of Equi=Tech transformers and balanced power solutions. I cannot hide my disappointment as I felt that the theory would suggest balanced power offers a high level of protection from AC noise and ground problems. One would think that physicists who can come up with such concepts as relativity and quantum mechanics, would have sussed out a comprehensive solution for our electricity woes. It is so bad with the Beveridige with their OTL amplification that it is laughable.

oxric wrote:

Romy, can you tell whether PurePower have identified precisely what made your units to perform as they do and whether that is now a standard feature of their off the shelf units?