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RE: Off topic question about polystyrene caps

Eh, yes and no. Based on the value of these caps, one would guess that they are suppression caps for very high frequency stuff. If I had the amp in question on my bench, I would probably put in a mica cap, as they are a little more tolerant to the heat that's generated right next to them.

Now, if you have some small caps in an EQ network or elsewhere where there is actual signal current passing through them, then the composition of the capacitor becomes much more audible and ceramic caps maybe should be avoided.

The nice thing about polystyrene capacitors is that they cost very little and sound incredibly good.


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