The best plug in filter ever!
Puron AC Power Conditioner by Greg Voth
After reading rave review of Puron AC plug in filter, I had got one 10 days ago.
For your information my system is very complicated with bi amping and three Farad linear supplies.
Thus I have 14 power cables, one main power conditioners, three isolation transformers.
I had tried plug in fliters from quiet lines, quartet stecker, IFI, furutech, Nordost Qv2 and QX2 fliters.
I still have all of them in my system without selling any of them.
I am collector. 😁
All of them had brought slight improvement but not drastic change.
But as soon as I inserted Puron Ac filter, it made background black with more details and clear bass.
The stereotimes review is spot on.
Encouraged by the result, I had ordered two more of them so that I can insert more of them close to amps and Dac.
Now my system got transformed with more vivid and clear sound stage but not overetched.
This is the best 750$ that I had spent during last 5 years in my audio system.
Thomas
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@sgordon1 yes it is indeed. For this hobby, “everything makes a diff” @ozzy I still have not moved my 2nd Puron next to 1st Puron at wall outlet yet. It is still at 1st bank of my Puritan 156 and yes, the result still jaw-dropping good- more revealing, clean and very musical. Best sounding I’ve achieved so far. |
For a double-blind test to be statistically valid, there must be at least 25-30 subjects in the test to assume a standard distribution curve so that you can calculate the reliability of the data. One or two people doing a double-blind test is just anecdotal. Back in 1995 I bought some very lame tweaks that I thought were worthless, and still do think are worthless. I would listen and think, "Am I hearing an improvement? Well, I paid for the thing so I might as well use it because maybe small changes add up." I think that was just optimism. They were not doing anything of real value for my system. I think if you meet someone who is happy with everything they try, that doesn’t necessarily mean that everything they try is good but could be indicative that they would like anything that they pay money to receive, as long as someone they trust has told them it will be good. This is bias. I love the quote from Mark Twain that "It’s easier to con someone than to convince them that they’ve been conned." BUT Logically, this does not preclude any of their tweaks from actually helping. If we are testing diamonds with a broken diamond tester that will say everything tested is genuine, and it tells us that 20 out of 20 tested stones are genuine, we can dismiss the diamond tester, but we cannot logically assume that the stones are all rubbish and that they should all be thrown in the trash. Likewise, if someone is testing numerous items and everything tested seems to be worthless snake oil, a critical thinker would question this as well. More so someone who does not even listen to the items and proclaims them all to be snake oil without having any statistically valid evidence to support such a claim. Scientists said that reports of a miracle cure that we now know as vitamin C was "witch doctor superstition" for around 200 years before the scientific community had enough knowledge to understand what all of the anecdotal reports were saying. But statistical analysis practices aside, if one listens to a supposed improvement in one’s system and does not hear the sort of clear (undeniable) audible difference that one experiences with adding acoustic treatments,... and feels the need to test the "improvement" with a double-blind tests,... then the difference was probably negligible and not worth the trouble. Since a statistically valid scientific test is probably somewhat impractical for most of us, I suggest that if you listen to something and you even ever-so-slightly feel the need to test, just send it back promptly and get a refund. That being said, I have purchased products, listened, and then thought, "Pfffft. Lame." I have also purchased other products (secretly without telling my wife) that made me say, "Whoa! That was an improvement!" and then my wife, with no knowledge of anything different, walked through and commented, "Your system sounds better what did you do?" So, I don’t have any bias about tweaks other than to say 1) I expect some of them to be pure marketing rubbish, 2) I expect most of them to be of negligible value of the sort that would need an A/B test to determine if they are an improvement, in which case I would say the aren’t worth it, and 3) I am open to accept that some of them will make an immediate and undeniable improvement that I can enjoy. I just bought a Puros, and I will report back to the group with my unbiased but anecdotal critique. (The other gear in my system includes: Linn LP12, Levinson No.31 transport on PS audio power conditioner fed by Synergistic Research foundation AC cords, Naim Uniti Atom HE DAC & streamer, SR Foundation XLR interconnects & speaker cables, Levinson 33H monoblock amps, Wilson Maxx Speakers, Nanoflo on most all connections, seven of Krissy's various bizarre devices, 2 bybee AC devices, Townshend pods, Shunyata Alpha NR & Synergistic foundation AC cables, Shunyata Denali power conditioner, Shunyata venom plug-in filter cap, (4) iFi iPurifiers, upgraded fuses, isolated ground, dedicated audio line from breaker panel & isolation transformer, star grounding for all components on a SMD copper grounding block, Skyline diffusors on ceiling in front of listening position, 5 Tube traps, about a dozen large acoustic panels around the room, more home-made diffusors, and I'm sure I probably forgot to list a lot of my gear.) (NOTE: I'm open to any system recommendations as well!) Happy listening to all Halz
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