Dear
@jimbones : For years I was using caps as Duelund, Mundorf, Jantzen, V-caps, Sonicraft and the like suddenly I made a " crazy " change and a few months ago I " discovery " that WIMA caps are the true path to go. It's a non-audiophile cap but it's the any kind industry ( just name it.. ) proved and real Standard and for very good reasons No snake oil with Wima.
One month ago , between other before changes, I pull the triger for an extremely critical caps change.
Things are that for years the high-pass filter in my bi-amp system I did/do it through the Levinson monoblocks input cap.
This cap is not a by-pass cap but the Levinson input coupling cap where all the frequency ranges goes throuth it, as I said really critical system cap.
Well I was using there a V-cap Teflon Cu ( 100.00 each one. ) and I changed for the FKP-1 Wima cap and this really humble cap outperformed the V-cap with an unexpected easy.
When you can take it a time you can buy ( 2.00 each cap. ) the original 0.01uf Wima FKP 1 and you can test it and see what happens down there, of course that you can buy too ( are so inexpensive. ) the 0.022uf ones.
Don't be " intimidated " by the ridiculous non-audiophile Wima caps, just try it and decide after that. You can lost nothing and can achieve some rewards and at the end is something to learn and " fun " to do it.
Btw, no colorations/nice distortions through Wima, only the signal with no added " colorations " you can detect:
https://www.mouser.com/WIMA/Passive-Components/Capacitors/Film-Capacitors/FKP-1-Series/_/N-9x371?P=1z0zldhZ1yzojejZ1z0wpzo
In my speakers crossover I use the MKP-10 Wima model.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.