$25 .1uF 400V coupling cap?

Much (!!!) too expensive, without any (!) benefit. Who needs a tolerance of 2 % in a coupling capacitor?
I second the recommendations given in #16. Any .1 µF 600 Vdc cap that is more than ~2 bucks is overpriced BS.
Mind to read the document linked in #15?

Best regards!
 
Two specs were given other than price.
Dig a little deeper 🙂

The part is .1uF 400V .
Widely available, cheap, as common as mud, thousands different brands, types and prices available, main point is any and all will work properly 🙄

The job is EASY 😎

Yet a question WAS posted 😕

So clearly capacitance and voltage ratings are NOT that important, and exaggerated price becomes THE deciding point , to choose one over the other.

At least, that´s how I "read" the question, and what "spec" I would consider to answer it 🙂
 
At least, that´s how I "read" the question...
And I! As I said earlier, the requirement was that the capacitor was to cost around $25. No question was asked in relation to its efficacy in relation to less expensive coupling capacitors or to a particular method of construction. The criterion given was simply price.

I suggested the capacitors recommended by the manufacturer of the amp as they ticked the box with regard to price range. Would I buy them? Well, that's irrelevant to the OP's question!

I wonder if the OP will return to tell us what he decided to purchase on the strength of the many recommendations he has received? :cheerful:
 
Keeping with reality, there are widely different types of personalities, with widely different ways of thinking.
For instance, there are the elevated, discriminating, connoisseur types, often called elite individuals.
They prefer, and enjoy, for whatever inner reason, fine wines, and will spend enormous amounts of money on the high-end premium sippy-sip, with an equally elite nose towards bouquet.
Cheap swill is never on their minds...... god forbid, they're part of elite of course.
And they may not even realize, understand, or care what they're even doing, they're narrow focus is honed and rigid, they live in a world of their own.


Now, electrons, electrical charges, on the other hand, naturally don't have any of those human traits.
And how could they, they're not humans.

They "flow" (for lack of a better word) along paths given to them with no sense of what quality the materials they're traveling in is made of.
Electrons can't decide, pick and choose, which is a better and sweeter choice or path to follow.
That is left to the human to choose.


On the flip side of things, there are the people, like me, that are in a class referred to as "below the elite level", or labeled as the ordinary or "common folks".
We folks, particularly the ones educated with the fundamentals of electrical theory under our belts, prefer to purchase the "cheap swill" types of capacitors, knowing full well that they're perfectly adequate for the jobs they're supposed to do.
Nevertheless, us folks do have a desire for, and a sense of quality, and know that it can be gotten quite easily from a lousy $15 bottle of wine.
 
I was shopping for caps and did not want to spend more than $25. In the end, I decided that I like the look of Wima caps and assumed they are less expensive because Wima can manufacture them by the millions.

I bet they are likely an upgrade from the kit caps, but I will have to install to find out.

On a separate note that might stir up more class warfare: I did buy two $45 MUSES01 opamps to roll into a TU-8500. Does that make me an elite? I hope so! ;-)

On one hand, they are expensive for opamps.
On the other, you can buy them on Mouser.
 
It's all about perceived quality and superficiality, not fundamental reality.
For instance, I know people who are self classified as fanatics, yet in reality, they're merely puppets guided by others opinions. - a sort of "herd mentality".
They insist on having vintage McIntosh audio equipment, bragging of their "high end" aquisitions.
I find it a little amusing, particularly since these people haven't a clue about the actual specs of those pieces - substantially below some reasonably priced vintage Japanese products.


But it's McINTOSH for lords sakes! 😱
And then they complain about the dial scales, paint flaking off dial scales, front panels... LOL!


Ya got what ya wanted, now live with it.



The bottom line is...... what's in a name?
 
Yeah.... I browsed thru it.
Behavioral stuff - like I said before, people acting like puppets, status worries...gotta "fit in" etc.
I get dumb looks when I tell one of those self-made types that "how come my Technics only has 0.007% IM distortion levels, and your "high end" Mac is rated at 0.25%?


Deer in the headlights stare..... then "But mine's a McIntosh!"


Duh.... it's so dumb, so rediculous.
 
I ordered some Wima MKP 10 for ~$2.

You don't even need the MKP10 as a coupling capacitor, although they will work fine, of course. This is a line of film and foil caps, especially dedicated for high current surge and pulse applications. The metallized film MKP4's will also serve well as couplers. They use the same dielectric, are smaller and somewhat cheaper than a MKP10 of the same capacitance and voltage ratings.

Best regards!