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Re: -And that low-K capacitor thing?, OR, why aren't Z5U capacitors good enuf for audio - same deal.

Dolts like Aczel probably don't even have the technical background to appreciate the fact that tube interelectrode capacitances, because of their ideal dielectric nature, free tubes of a whole myriad of dynamic distortions that sand amps suffer from. And guess what, lousy capacitor and SS distortion due to the high K of intrinsic silicon are both difficult to impossible to pick out with steady state distortion analysis.

Aside from the above, on a per-device basis, tubes are usually lower distortion than transistors, so work well for audio in simple topologies with only local (or even no) feedback where transistors won't. However, lower static distortion figures can be achieved with global feedback over two or more stages for a given circuit topology, tube or transistor, with very much less correlation to perceived sound quality.



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