Mica VS Polystyrene

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

I recently stumbled onto the following comment in an article about inverse RIAA filters by Lipshitz and Jung. This is in relation to listening tests that the reader can perform by feeding their phono preamp with signals from the authors' filter design.

"You must use network components appropriate for listening use. Mica capacitors, while entirely adequate for steady state bench tests, have some dielectric absorption which is undesirable for auditioning tests. Polystyrene capacitors are preferable for listening, as are metal film resistors."

I thought this note regarding mica vs. polystyrene was interesting. I use mostly polystyrene caps in circuits like these, but the few times I've included a few micas, I don't remember hearing much difference. Anyone else noticed (or not noticed) a significant difference between them?

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Topic - Mica VS Polystyrene - Triode_Kingdom 20:02:02 07/20/17 (6)

RE: Mica VS Polystyrene - awesterner 20:24:12 08/09/17 (0)

RE: Mica VS Polystyrene - 6bq5 10:14:22 07/21/17 (4)

RE: Mica VS Polystyrene - Triode_Kingdom 13:14:14 07/21/17 (3)

Polystyrene Temperature Ratings - Triode_Kingdom 12:06:37 07/22/17 (2)

RE: Polystyrene Temperature Ratings - Eli Duttman 13:29:42 07/22/17 (1)

RE: Polystyrene Temperature Ratings - JimL 20:12:39 07/27/17 (0)

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