Hi, check beforehand temperature values if your preamp is a tubed unit. Mundorf caps add some spice, Aydyn are more natural sounding. Also check and measure their tolerance if possible (eliminate surprises).
What values are you considering and what application?
AFAIK, the Audyn TC come in limited sizes, while Mundorf has a wider range. Also, examine the physical size of them. The pics make them all look the same online!
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