[morzh]

Tim

What exactly did the caps do to the signal (I see some blimps at the tops on the yellow trace, but there is something also at the bottoms of the blue one).
And the brown dips - are they also junk or do you hear something, or does the scope shows something?
I am not sure I can understand how a cap, (if it is a cap and not some Chinese housewife buying some aluminum foil wrap in a supermarket and then twisting wires to it's product), can do something like it. At some frequencies there are resonances, anti-resonances etc, but those are not exactly audio frequencies. And the losses etc, unless they are egregious, shouldn't do this either.

I'd like to hear about your findings.

PS. Yes, for a high quality Hi-Fi I would use nothing less than a legit company, even if it builds the caps in China (all do), but no-names simply cannot be guaranteed to perform. This is exactly why I do not buy caps from the "he is a good guy and he sells caps" because, well, he might be a good guy, but if I need a cap to withstand 400V and I see no company logo, no marks, no dates, no nothing except "0.01uF 600V" on this yellow job, I do not really know what's inside.