When is digital going to get the soul of music?

I can tell you with assurance that the Duelund CAST caps will indeed improve the sound. I have upgraded several front end dacs and CD players with these caps with huge, not small, gains each time. The improvement after burn in will not be slight. You won't strain to hear the difference as it will be obvious without burn in.

Few things are no brainer a, but this is one :-)

Grannyring is right, he recommended I try them in my Yamamoto YDA-01 DAC(the output capacitors). The sound went from already very good to genuinely superb! I 've no desire to replace it with anything else. I can't imagine any audio component not improving substantially with the addition of the Duelund CAST capacitor.

Charles1dad, while I have not done a comparison of the Duelunds with the Urushi and other blocking caps, I do have two friends who have and both report the Urushis are both cheaper and better. I use them in everything where I can get them in.

Tbg,
One thing that's inevitable in high end audio is there's never unanimous consensus or universal agreement on anything. If someone found a better capacitor than thr Duelund CAST and for less money, more power to them.
All I can do is report my experiences and certainly for me the CAST is a terrific product. I'd recommend them without reservations. If others feel the same way concerning the Urushi that's good.
Charles,

As soon as we evolve digital brains.