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  »  New  What lives in Symmetric Sound?..  The beginning of our journey is ALWAYS symmetrical...  Audio Discussions  Forum     19  175315  05-28-2004
  »  New  Always check power-line polarity...  The Cost of Knowing...  Audio For Dummies ™  Forum     11  112427  07-10-2005
  »  New  RAAL “Water Drop” tweeter for Macondo...  Your comment takes me by surprise...  Horn-Loaded Speakers Forum     77  925058  02-16-2007
  »  New  My feelings about new exciting audio products..  Vacuumstate...  Audio Discussions  Forum     25  264953  04-30-2007
  »  New  Musique Concrete horns..  These are now sold as Kornhent products...  Horn-Loaded Speakers Forum     6  108313  06-12-2007
  »  New  Compression drivers and the “clean signal”...  The NEW “Compression drivers and the clean signal”....  Horn-Loaded Speakers Forum     14  163632  07-12-2007
  »  New  Digi Redux; Drive 1 transport and iDAT-44+ DAC..  Moray James SPDIF!...  Didital Things  Forum     27  230739  09-28-2007
  »  New  Metal domes..  Try the one Lansche is using...  Audio Discussions  Forum     6  79021  11-08-2007
  »  New  The power AC Outlets?..  Where to Pick Up the Gong?...  Audio Discussions  Forum     2  43211  10-31-2008
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  »  New  Internet and electricity..  Suboptimal. . ....  Didital Things  Forum     1  29367  01-07-2010
  »  New  Electricity... power strips and ac improvements..  Electricity... power strips and ac improvements...  Audio Discussions  Forum     0  16695  03-30-2010
  »  New  Another example of energy..  Tehran 230v...  Audio Discussions  Forum     1916  9950788  01-29-2011
  »  New  I good spot-light for a turntable?..  Reply...  Analog Playback Forum     15  154769  10-24-2010
07-18-2017 Post does not mapped to Knowledge Tree
xandcg


Rio de Janeiro, BR.
Posts 218
Joined on 09-07-2014
Post #: 1581
Post ID: 23332
Reply to: 23330
I do agree.
I think I mentioned before for the price of a Stromtank  one can probably get two huge (datacenter level) EATON UPS (or a large extra battery pack) with theoretical output of <1% THD on linear loads - with enough power to driver the entire house, inclusive.

I quick look on battery prices show those type of batteries they use costs around U$210 each. I do not know if the one I saw is a "good" one but...

My personal interest in batteries is related with the fact I would prefer to have controlled power instead of a total random one - specially if living in a place with unreliable power supply or a very dense and noisy one. However it still would need to have something low impedance later - probably a isolation transformer.

Cheers!

EDIT: anyway, it would be interesting o know what batteries, or even the total solution, the Living Voice guy use.


Think for yourself, do not be sheep.
08-04-2017 Post does not mapped to Knowledge Tree
ArmAlex
Iran
Posts 106
Joined on 02-15-2009
Post #: 1582
Post ID: 23355
Reply to: 21787
Wait is over!
I finally got my hands on PP 3000+. Romy was right wait was worth it.  I already have a dedicated power line for my system with a proper earth and I'm using Purist Audio design power cords. But improvement with PP is dramatic. In my opinion it makes kind of improvement to sound that is not possible to achieve with any other change/upgrade in components. It improves the dynamic range and at the same time lowering sound floor which makes listening experience quiet different and pleasing.
Armen
08-05-2017 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,159
Joined on 05-28-2004
Post #: 1583
Post ID: 23356
Reply to: 23355
Yep, it is so good....
 
 ArmAlex wrote:
In my opinion it makes kind of improvement to sound that is not possible to achieve with any other change/upgrade in components.

I have a very same feeling. At this point I do not think that is has anything to do electricity after all. It rather has to do that it somehow preconditions power supplies of whatever you use, making the power supplies to sound better. I had spectacular electricity ways with now so perfect sinusoid and a lot of distortions in my older listening room. At my current listening room, I do not have a very good feed from grid (400A) and a dedicated line. The town is way outside or any civilization. We have no commercial properties in the whole town, not even a gas station. The quality of electricity in here is very good, still it is very distinctly different with and without the PP3000. As far as I concern these PP units are absolutely mandatory for any more or less pushy playback. Now, shall they be the PP units themselves of some kind of side-effect that the PP units produce? I do not know the answer. As the kids to grow up a little I think I will return to look into it.

"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
08-06-2017 Post does not mapped to Knowledge Tree
ArmAlex
Iran
Posts 106
Joined on 02-15-2009
Post #: 1584
Post ID: 23357
Reply to: 23356
PP effect
At this point I do not think that is has anything to do electricity after all. Romy I meant despite having a "good/proper" power line PP effect is wonderful and irreplaceable. The quality of electricity in here is very good, still it is very distinctly different with and without the PP3000. I agree with you completely. Of course I'm very new to PP, it's just a week in my system but in this short time I feel there is a correlation between  power line quality and final sound. You were always mentioning to educate ourself about sound, I think PP is a very powerful tool in this respect. 
08-07-2017 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,658
Joined on 10-12-2006
Post #: 1585
Post ID: 23359
Reply to: 23357
The Care and Feeding of Conventional Power Supplies
Yes, Romy, the pictures of the PP's switch-generated output traces are very different from the direct, clean AC outlet output traces, all right.  But this is not the same as a switch mode power supply, since what PP promoters here are talking about is conventional power supplies fed by inverted, switch-generated AC.  On the face of it, all this seems to be too complicated by half.   On the other hand, users like what they hear from this elaborate set-up.  So, where does Ockham come in?


Paul S
03-24-2018 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,159
Joined on 05-28-2004
Post #: 1586
Post ID: 24765
Reply to: 2931
PS Audio new re-generator P20.
It looks like PS Audio release their new most powerful regenerator P20. It is 2KW, $10K and they sell it honestly: free in-home trial. As readers of my site know I am not a proponent of type regeneration that PS Audio does. The Class AB regeneration loos a lot in dynamic in transformer, filtration and a few other things. I do not know is it belong the Class AB regeneration topologically of it is specific to the PS Audio implementation. I had 5 Power plants and they worked questionably. It turned out the I am in Class D regeneration camp. Again, I do not know if it is topological or it is because the PP3000 specific implementation. Anyhow. It will be very interesting to compare the PP3000 vs the new P20.I am not the one who has interest to do it but I am the one who would like to hear about the result. Theoretically more powerful unit of Class AB regeneration should have advantage compare to less powerful Class AB regeneration unit. Still, I do not know if it will be enough to overcome the Class AB regeneration dynamic restriction compare to Class D regeneration.
   
Anyhow, I would like to pass a few comments about the new P20 that I am sure will be missed from “reviews” that will be coming over the next few years. The new P20 has a sexy display, on-board distortion analyzer and on-board oscilloscope. Unquestionably they are great future and something the I was advocating in past. Well, get it from the person who know a lot about usability of power regenerators and who spend many years to deal with sonic effect of bad electricity: these axillary futures are not necessary if the unit produce good sound. If you have a good regenerator that make comfortable to you sound then you plug it in and forget about it for years. All these sexy meters and distortion analyzers you need ONLY if the unit does not sound good. The only features the you need, and I can’t convince people to understand it, is a remote control that flip a regenerator in and out od bypass mode. The regenerators consume a lot of own power. The PS Audio are probably 50% efficient, the APS probably 80%. If you are not listening your playback and like most of audio people power some components all time then there is no need for you run your regenerator in regeneration mode, the bypass is totally sufficient. As you sit to least your system you punch a button, sending your regenerators in regeneration mode and it is all that a sensible regenerator should have. If you feel a need to look at big colorful display and to read the power distortion numbers then you do something wrong and you need to change ether regenerator or you hobby.

"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
04-10-2018 Post does not mapped to Knowledge Tree
Amir
Iran Tehran
Posts 347
Joined on 02-11-2009
Post #: 1587
Post ID: 24798
Reply to: 24765
PurePower 3000
I listened to Purepower 3000 we finally got it in iran.



it is wonderful , new level of dynamics , far better than direct utility.
I have a question about pp3000 if you had it in a ultra transparent system.our system is not ultimate in transparency and I would like to know is there any hint of (very very very minor) hardness in sound of PP3000?I want to be sure those minor hardness is related to other thing like break-in or other parts of system.the pp3000 unit in our test was healthy with no ground loop problem of reported by drdna. it was absolute silent.the test was done by playing analog LP of some records like on every street.

www.amiraudio.com, www.hifi.ir
04-11-2018 Post does not mapped to Knowledge Tree
drdna
San Francisco, California
Posts 526
Joined on 10-29-2005
Post #: 1588
Post ID: 24799
Reply to: 24798
Soft sound of pp3000
I have been living very happily with the PP3000 in my living room for a while now, and have had no problems with the new updated version that I finally received after a long effort with the company. Unlike the original unit with the odd internal ground loop, the new unit is silent in operation. I still suspect that some internal wiring issue of the old unit had caused it to fail, as I had tracked down the ground loop to within the device, as you may recall.

Anyway, the new PP3000 is completely silent and very reliable in operation. As expected, it provides stability and transparency to the system. I say it is like when the surface of the ocean water is completely still and you can see all the fish and ocean bottom clearly below. Without the PP3000, the ocean waves are there, kicking up sand and make it more difficult to see anything but murky shapes.

I personally have not noticed it adding any hardness to the sound. However, the ocean waves can be very exciting and sometimes you can confuse the lack of this added instability for hardness.

Adrian
04-11-2018 Post does not mapped to Knowledge Tree
Amir
Iran Tehran
Posts 347
Joined on 02-11-2009
Post #: 1589
Post ID: 24800
Reply to: 24799
New generation GOLD Edition
our pp3000 is also absolute silent with no issue. I should say I should replace "hardness" by "less relax in higher perception levels" as I guess it is due to break-in. 
this is new generation of Purepower 3000.
Image result for purepower gold Image result for purepower gold
It has some options : https://www.audioemotion.co.uk/purepower-2000-gold-series-reference-grade-ac-regenerator-880-p.asp
the battery lithium is an option.



www.amiraudio.com, www.hifi.ir
04-12-2018 Post does not mapped to Knowledge Tree
xandcg


Rio de Janeiro, BR.
Posts 218
Joined on 09-07-2014
Post #: 1590
Post ID: 24805
Reply to: 24800
Isotek.
I really would like to hear from someone who has experience with PurePower and Isotek EVO3 Super Titan + EVO3 Genesis. But I guess that would not be a easy catch. Smile


Think for yourself, do not be sheep.
06-15-2018 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,658
Joined on 10-12-2006
Post #: 1591
Post ID: 24938
Reply to: 24805
The Odd Good Day!
Apparently it still happens: good electricity during the day.  Wifey went to the fair with a granddaughter, so I took full advantage!  If forced to guess why the electricity was good, I'd guess that the nearby school is out, kids are visiting relatives, and most adults are at work (no industry around here).  It's warm enough here today that the grid is pre-charged for air conditioners, but folks are still at work.  Anyway, focus was great for an original Angel LP of David Oistrakh, "Encores" (stereo), and Heifitz with Reiner/CSO, Brahms VC, original RCA "New Orthophonic" LP (mono).  My re-built cartridge actually tracks and sounds better than ever, and the work I did on the phono stage seems more and more like good idea.  I had loaned my TVC to Mark for a while.  His system is all balanced, so that's how he hooked it up.  Before I finally put it back in my system I re-cleaned and re-greased all the connections.  Nice!  I happen to have a giant power company transformer right at the southeast, front corner of my lot, but the difference when the school is out, and the grid is charged, and the ACs are off is still quite audible.  I think they've made up the current from the decommissioned nuclear plant, so the usual problem, I think, is the "digital interface", the "smart" aspect of the system that seems to keep the sound so it's generally neither terrible nor good.  But today was good, so who knows, it might be a Trend!  Anyway, its always good to feel hopeful about it.



Paul S
07-19-2018 Post does not mapped to Knowledge Tree
Amir
Iran Tehran
Posts 347
Joined on 02-11-2009
Post #: 1592
Post ID: 24965
Reply to: 24938
Ayre L-5xe Line Filter
I had not good result with line filters.
 is there any experience with Ayre L-5xe Line Filter?
https://www.ayre.com/literature/Ayre_L-5xe_Literature.pdf


www.amiraudio.com, www.hifi.ir
07-25-2018 Post does not mapped to Knowledge Tree
OracleAV
Posts 5
Joined on 07-25-2018
Post #: 1593
Post ID: 24966
Reply to: 10620
PurePower, PurePowerAPS.com and Richard Janzen is a complete fraud
Contacted PurePower early 2017 and got a money-back guarantee to audition their PurePower+ 3000

Hooked up my Audio Research mono amps and powered on.   With the first mono amp on, PurePower started to generate this loud buzz from inside the unit.  Turn on the second mono amp, and the buzzing noise got even louder.   So loud that it was impossible to listen and enjoy music.
No, I am not talking about hum coming from speaker.  This is buzzing noise, apparently from coil vibration inside the PurePower unit.
Sent back, got a replacement unit, and same buzz problem.
Was told by Richard Janzen they found the problem and working on fix.   Was told it was fixed but never got a unit back to re-start audition.   Days turned into weeks into months.   Was then told they are building new model, PurePower+ 3000 Gold and they want to send me the new model.   After waited 15 months, finally got Richard to send me the 'new' unit.
Turned it on, and it buzzed as badly as the 2 units I tried 15 months ago.   Returned the 3rd unit to Richard immediately, and told him that it appears that the PurePower and my ARC simply don't play well together, and asked him for a refund.

Weeks after the unit was returned to Richard, I still didn't get my refund.   Calls and messages to PurePower often went unanswered.   When finally got hold of Richard, he claims they are short of money.   And without any hint of remorse, and as if what is happening is normal, he gave me b.s reasons about why they are low on cash, and just kept me waiting and waiting.   After waited more than a month and half, he then proceed to tell me that he will have to 'sell my unit' in order to refund me.   What kind of non-sense!  I had never agreed to buy his unit, and those 3 units were powered on at my house for no more than 10, 15 minutes TOTAL before I yank them out of my system and sent them back to PurePower.   They were never 'my unit' - they are his.

Richard and Damian Janzen of purepoweraps.com basically defrauded me US $5200.   Stay away from PurePower
If you really want battery-based AC regenerator (as opposed to direct AC regeneration from wall outlet, such as the PS Audio DirectStream Power Plant), you should contact the actual engineering designer of the original PurePower, who is now running the ProPower at http://www.ppowerus.com/audio/provspure/

You can read all about it here
https://forum.audiogon.com/discussions/bad-experience-with-purepower-of-canada
And other people's bad experience with this fraudster father-son pair of Richard and Damian Janzen
https://forum.audiogon.com/discussions/beware-of-dealing-with-purepower-partners-inc
http://www.whatsbestforum.com/showthread.php?25934-WARNING-PurePower-purepoweraps-com-Richard-and-Damian-Janzen-are-frauds
https://www.audioaficionado.org/showthread.php?t=31225&page=2

07-25-2018 Post does not mapped to Knowledge Tree
drdna
San Francisco, California
Posts 526
Joined on 10-29-2005
Post #: 1594
Post ID: 24967
Reply to: 24966
Spam e-mail
While I and a few others have had some delays with PurePower, they came through in the end with an outstanding product. 

I have grave suspicions about a post complaining about PurePower and simultaneously promoting a link to the "ProPower" company, whose website is crudely put together in broken English, littered with grammatical errors, questionable claims, and lacks a identifiable physical address.
07-25-2018 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,159
Joined on 05-28-2004
Post #: 1595
Post ID: 24968
Reply to: 24967
How to become the lucky… Go figure…
  
Drdna, I do not think that the email above is “Spam e-mail” just because they promoted the Chinese version of PurePower. Everybody who followed this story knows about the history and the relationship between Chinese and Canadian PurePower. If this OracleAV guys got upset about his $5K then it is natural to looking for a spiritual partnership about the “enemy of my enemy”. The said story that I very much believe OracleAV and that the events he describe are accurate, well, at least his side. It is despite the fact that over year of dealing with PurePower I never had any bad monitory experience with them. I have a number of people I know who has problems with PurePower in term of product quality, support or delays but among the people I know whoever should be betting money back everyone got it. There was obvious glitch with this specific customer, it is very sad, I do not know what happened but it is for sure should not be happening, if it did. The fact that PurePower send to the guy a number of units trying “to work in the problem” do indicate that PurePower was trying to work with the guy and with the problem they had. I do not know what happened in the end but I am pretty sure it is not the end. It is most likely PurePower still feel that they are “fixing” the unit but Oracle guy sick from it and want out and he decided to use the pubic website to retaliate. It is sad situation for everyone and eventually it is PurePower’s fault as they let the situation to deteriorate so far. If it was some kind of company with excellent customer service, like GoDaddy or Amazon then it will be very much fireable event. 
 
Saying all of it I have to testify that I have 2 of my PurePower generators work spectacularly in term of sound over the years, obviously after the whole story I had with PurePower.  I use nowadays only my 3000+ unit and I probably I need to sell my 2000 as I feel that two PurePower unit impact each other negatively. Hey, any bidders for a full-tested and superbly sounding PurePower 2000? :-) 
 
I can tell more. I was told that PurePower has some update with different buttery style that should make the things “better” but I am will not let my perfectly sounding PurePower 3000+ to go out of my house. If my unit get lost, damaged or “updated” by PurePower with negative sonic consequences then I will be screwed as it is VERY hard to do with sound what  properly operating PurePower could do. 
 
So, I am very not wounded that somebody badmouthing PurePower. Obviously I am not happy but it is what it is. I feel that my site is not a consumer report organ but rather a place dedicate to belter sonic practice. It is obvious that from standpoint of product reliability and customer service PurePower has a lot of room for improvement. Still, they own a product that in my estimation absolutely unique and spectacular in term of sonic quality, if you a lucky to get one. How to be the lucky one? That’s is the question. I do wish the PurePower would make it easier for people to become lucky, whatever they do dealing with them requires a LOT of patience.  Well, like anything else in the world…


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
07-25-2018 Post does not mapped to Knowledge Tree
drdna
San Francisco, California
Posts 526
Joined on 10-29-2005
Post #: 1596
Post ID: 24969
Reply to: 24968
PP2000 plus PP3000+ conflict
Romy,

I agree with the very nice summary you have made of the situation. You remember that I struggled for a couple years to get PurePower to return my PP2000 which had gone for repairs, but ultimately they replaced it with a PP3000+.  

I just have to say it's suspicious when a new unknown person makes a single post giving a story about a company and then "conveniently" advertising their Chinese competitor as the "real Pure Power."

You STILL have the PP2000's? For some reason I thought you sold them long ago. I may be interested in them, for the "second" stereo system in my house. (Which just happened after accumulating enough old components, suddenly you have two of everything...) BUT will the PP2000's and the PP3000+ still make the interference even if not in the same system, even if just plugged in for a completely separate stereo system (or toaster, etc.) in another circuit breaker?

Adrian
07-25-2018 Post does not mapped to Knowledge Tree
Bill
Kensington, NH
Posts 117
Joined on 03-15-2010
Post #: 1597
Post ID: 24970
Reply to: 24969
Agree with romy
I have to agree with romy on all except one point. I have always had problems with my electricity even though I live out in the woods, but just 10 miles from the Seabrook nuclear power plant. My journey in improving this problem took up at least 20% of my articles at www.enjoythemusic.com. That is until On his recommendation several years ago, I purchased their original 1500 unit and was blown away by the improvement in the sound. Since then, since I have an 11.6 surround system, I use the 1500 on the surrounds, and have purchased and still use a 3000+ for my sources, and two 2000+ units for the right and left front and overhead channels. I have not heard any negative effects of using three units, possibly as they are run through three separate ac sources. Romy is familiar with my system and can possibly confirm this.     The sound is superb, and I have never regretted the purchases. When the company went through some hard times as their original engineer absconded with the plans and the company name and set up his own company in China, they did drop the ball with some customers and had long waits to supply equipment, since the pin their service has been exemplary.      Unlike romy, who fears a loss of quality by upgrading his units to the latest boards and lithium batteries, I've take the plunge and will be sending my two 2000+ units back to the factory for updating and the new batteries. That's how much I trust this company and Richard.    If you wish to trust the negative reviewer above and his recommendation of the company that stole Purepower's ideas and their Chinese manufacturing, go ahead. I'll stick with the Canucks.
Bill Gaw
07-25-2018 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,658
Joined on 10-12-2006
Post #: 1598
Post ID: 24971
Reply to: 24970
Running and Grounding Multiple PPs
Bill, you say you use 3 separate AC sources.  How are these sources separated?  Are they all 120 VAC? Are they all in phase?  Do they share a ground at any point before actual grounding, and if so, where do the grounds coincide?  Do you use a dedicated hi-fi system ground, and/or a dedicated, front end "bleeder" ground?  At any point is a system ground separate from your mains bus?  At any point is your system ground other than your system neutral?


Best regards
Paul S
07-25-2018 Post does not mapped to Knowledge Tree
Bill
Kensington, NH
Posts 117
Joined on 03-15-2010
Post #: 1599
Post ID: 24972
Reply to: 24971
Reply
each unit is connected to a separate adeptResponse power conditioner which has shielding for hot, ground and neutral. Each goes to  a separate 30 amp circuit breaker on the systems in room 100amp feed from a 200 amp service.  Had a separate ground pole from the house ground just outside the media room but this produced some hum in the system, so just use the house ground now.All ac connections including the circuit breakers and ground rod connection outside the house are coated with Tim Mrock's silver paste which also helps to quiet the system.
07-25-2018 Post does not mapped to Knowledge Tree
Lx_
France
Posts 33
Joined on 12-06-2009
Post #: 1600
Post ID: 24973
Reply to: 24972
PP power source
Interesting. It has always been my experience (as reported here already) that as outstanding the PurePower is at improving sound, it still is sensitive to input AC. This is contrary to what the product description would have you believe (the ProPower version is of course no different).

Romy stating that two PPs badly influence each other seems to support this claim, as does Bill saying that coating the cables leading to the PP quiets the system. If the PP was truly isolating our audio systems from mains this should not happen.

These days we are getting more and more of those switching power supplies. They are as great at being compact as being terrible for sound. So even with the PP doing its magic, I carefully track and disable as many supplies as I can (I am in the process of reorganizing the mains panel in my garage to be able to turn off all non-vital equipment easily using the circuit breakers -- individually or entire rows).

The only way to get truly spectacular sound from the PP was to run it from its internal batteries. But with those aging I have lost run time significantly (only a few minutes now). As it was only about 45 minutes when new anyway, I abandoned that route.
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   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  What lives in Symmetric Sound?..  The beginning of our journey is ALWAYS symmetrical...  Audio Discussions  Forum     19  175315  05-28-2004
  »  New  Always check power-line polarity...  The Cost of Knowing...  Audio For Dummies ™  Forum     11  112427  07-10-2005
  »  New  RAAL “Water Drop” tweeter for Macondo...  Your comment takes me by surprise...  Horn-Loaded Speakers Forum     77  925058  02-16-2007
  »  New  My feelings about new exciting audio products..  Vacuumstate...  Audio Discussions  Forum     25  264953  04-30-2007
  »  New  Musique Concrete horns..  These are now sold as Kornhent products...  Horn-Loaded Speakers Forum     6  108313  06-12-2007
  »  New  Compression drivers and the “clean signal”...  The NEW “Compression drivers and the clean signal”....  Horn-Loaded Speakers Forum     14  163632  07-12-2007
  »  New  Digi Redux; Drive 1 transport and iDAT-44+ DAC..  Moray James SPDIF!...  Didital Things  Forum     27  230739  09-28-2007
  »  New  Metal domes..  Try the one Lansche is using...  Audio Discussions  Forum     6  79021  11-08-2007
  »  New  The power AC Outlets?..  Where to Pick Up the Gong?...  Audio Discussions  Forum     2  43211  10-31-2008
  »  New  The Avicenna's failure is the great Avicenna success!..  New life for Avicenna...  Audio Discussions  Forum     8  84013  02-03-2009
  »  New  Internet and electricity..  Suboptimal. . ....  Didital Things  Forum     1  29367  01-07-2010
  »  New  Electricity... power strips and ac improvements..  Electricity... power strips and ac improvements...  Audio Discussions  Forum     0  16695  03-30-2010
  »  New  Another example of energy..  Tehran 230v...  Audio Discussions  Forum     1916  9950788  01-29-2011
  »  New  I good spot-light for a turntable?..  Reply...  Analog Playback Forum     15  154769  10-24-2010
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