Of course I believe you, the question is whether it matters, and where it matters. In the case of my CDP it uses an SMPS so that has to be factored in.

I'd like to try the cables...

I'm interested in the 'truth' of the source material, I have two speakers, when I play stereo material I want an image that relates to what's on the recording. Usually these are 'flat', such is technology.

FWIW given the nature of your power amp, have you tried using 'Eupen' cable to your speakers?

Paul