Best Cable for canceling RFI

I hope I am not accused again of trying to schlep HMS cables here if I spread some information of HMS cables concerning a specific topic.
I will notify anybody that my opinion could be biased by the fact that I am the importer of said cables and I admit also that HMS is not the only good cable out there, (but probably one of the few cable brands, reasonably priced for that kind of performance)
I have discussed this topic of RFI/EMI rejection extensively with Dr. Strassner , since he said that rejection of EMI/RFI will be a growing issue in the future (more computers, more cell phones, more broadcasting towers, etc.)so he believes in extreme shielding of all of his cables, plus an additional 6 step filtering, which accumulates in a 99% rejection of EMI/RFI with his cables.
So if someone really suffers from that kind of problems, he should audition several brands of cables to find out, if cables are the cure for his problems or if investing money in a power conditioner will help. Actually the HMS power cords come with a build in power conditioner and cleaner, but there are several good brands available as stand alone power cleaners if you would like to invest more money. I also use the Stealth power cleaner along with said power cords.
I will repeat my Matra all over again: Audition, audition, audition.

Tekunda- A much more respectable approach, nice job :)

~Tim

FWIW I did the test of disconnecting all IC's at the amp not the source. I switched the power cable from one outlet to another.
I do seem to have more noise from the speaker nearest the outside wall.
My question is - If the sound is not amplified by the amp (volume knob has no impact) is it likely that the speaker wire is the problem?
are ferrite rings on the speaker cables a possiblity?

Ha! now I'm catching on...
No one mention about input small signal tubes(or a poorly designed input circuitry). I'm not sure what input tubes are there in Jolida but I think that 80% of your problem are either inside or outside the input tubes + you've probably got a sensitive amp. I believe that further follow-ups can advise you which tubes you should try. IMHO the circuitry have to have a free of microphonics designe no-matter what tubes you're using.

Sound not being affected by the volume control just means RFI somewhere after the volume control, which could be in the power amp (that section of your integrated amp) or in the speaker cable. I think it's more likely in the amp, since speaker signals are generally too big (in voltage and current) to suffer from RF interference.
Since one speaker is worse than another to me this points the finger at the amp and not the power supply (the mains).