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Psvane Teflon capacitors real or fakes?

These are great looking capacitors and supposed to be competing against the Audience, Rel, V-Cap, and Sonicap Teflon capacitors. A couple of my tweaky friends who have no end to new capacitors gave them a try and had one quit after a month or so, and with the wire cut off, no return possible. So they cut it open, yes they are curious, and according to them, the guts looked like mylar, measured like mylar??? Could these not be Teflon caps after all??? I open this for discussion with some of the tweaky electonic minds out there to get to the bottom of this. If they are not genuine teflon, I would not want fellow audiophiles to get ripped by another false claim. But to be fair, real verifiable data should be submitted here, no guesswork. I trust my friends, but I did not do the test, so I open it to other philes. Hey, I like a great deal too, but if it is not as advertised, I get pissed too. Take a look fellow philes, and lets solve the mystery....Jallen
jallen
terry9
2,342 posts
 
You may wish to dismiss my comments as uninformed, because I have only heard a break-in difference with metalized caps, never with film and foil. Perhaps I just gradually accommodate to the difference without consciously hearing it.

In any case, all the teflons (Vcap, Relcap, Solen) were unused, the RTX was previously used as a coupling cap in an amplifier, the polyp f&f used in power supply filters.

I agree that the RTX appears a bit less clear, but I wonder if this is an accurate perception. Comparing teflon to air, for example, shows that teflon is far from neutral. Yet it is pleasing in one or two places in the signal path, while more can be wearing.

I think that teflon is putting a slight artificial edge onto the program material. The brass bells in Solar Winds seem a bit larger than life, for example. Perhaps teflon re-introduces an edge which is lost in many recordings, or perhaps we are just engineered to be "edge detectors", and so find enhanced edges pleasing.

What do you think?
johnsonwu
469 posts
 
Sorry but have to disagree. Even the cheap Russian teflons make the mid and high transients very linear and never overshooting (glare) for as long as the circuit is neutral.
jallen OP
502 posts
 
I have heard the V-caps in enough circuits and compared with many other caps to feel comfortable stating that they are very neutral, and I hear no edge (with the exception of the first 300 hrs.) And, any " bright sound" has been traced to other parts, tubes, etc. In fact, if they sound harsh, start checking for your weak link, its not the caps. We identified transformers, other caps, interconnects, etc. as adding to the "brightness" of the sound. If you clean the window and don't like the view, don't blame the glass.....jallen
terry9
2,342 posts
 
I agree that teflon caps, including the Russian ones, make music sound cleaner and more exciting, especially on transients. Also, I have modded and improved equipment from the ARC SP8 and onwards, so that's a few years worth, and I always started with caps.

To continue with Jallen's analogy, I guess that I see streaks on that window unless I use air gap.
audiofeil
4,011 posts
 
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