Anyone replace ceramic caps with film?

Thanks for the responses.

I spoke to the circuit designer and he said he used them because they are cheap and last a long time. He said the Amtrans film caps I found look great.

Never assume. :)

I'll do some listening tests and hopefully the film are an improvement. Its in a feedback circuit in an opamp.

Never assume. :)

That reminded me a discussion about four and a half years ago:

levinson has odd choice for cap upgrades in one of their service bulletins

XR7 would be the first choice for this application... makes me wonder why they used PP in the first place.

@pragmasi is exactly correct!

The X7R ceramic cap’s ESR allows the cap itself to damp any ringing/resonance.

Thanks!