Preamp power supply capacitor upgrade

Thanks for the suggestions!

@bigkidz The Miflex copper foil/polypropylene oil and Mundorf Supreme silver gold series are certainly within budget and worthy of consideration.

@alan60 The "vertical" configuration of the leads of Duelund would may pose a problem, so I’d like to stick with the "horozontal" configuration.

I would be interested if anyone has any thoughts on the Audyn true copper max or silver series metalized silver polypropylene.

I think I’m beginning to over think this, so might just stick with the discounted V-Cap TFTF since it’s going in the power supply.

@mark200mph The cap supply store I use is partsconnexion.

PS - When I do buy film caps I start at Parts Connexion, they often run seasonal discounts on film caps.

@yowser Your goal here is, I assume, to improve performance.

To that end, by bypassing the power supply, what you want is uniform output impedance of the power supply at all frequencies. So the correct dielectric may not be the one that is also the most expensive!

I'd stay away from oil and paper parts as they have a way of developing electrical leakage and may also leak physically. We stored a bag of such parts for about 10 years and upon retrieval, found that the bag smelled of oil. So for reliability I would not use such parts if DC voltages are involved.

@yowser I used thr Audyn True Copper Max caps in a recent phono stage build. The enameled leads were cumbersome, but they sound fantastic. My impression of them is they're a little more present and less euphonic than Miflex but still that big soundstage and smooth copper foil sound. Very nice caps. 😁 They're not small caps though so make sure you have some space.

-Lloyd

If you go 'on the cheap' now, you will always be questioning whether you should have bought the better capacitors. Audiophilia is all about seeking that elusive 'Perfection' - usually at any cost! If you don't upgrade now, you probably will further down the road. Go for it...