How important is EMI and RFI rejection?

Not sure there is a technical measurement for blackness :) I was just responding to the original question and when I see stuff like: "Radio Frequency Interference (RFI), affects a cable directly in the audio range" it's just flat out wrong.

I've been looking for some new cables and liked the design philosophy of BJC for unbalanced audio cables. Why? Because their audio cables are based on video cable stock. Therefore, you know they have the best possible RFI rejection as this is a primary design criteria for delivering radio frequencies. Do they sound good? I have no idea. But I'm am confident they provide extremely high RFI rejection as all high quality video cable will.

Good luck w/your search.

In my limited experience, the JPS brand of cables provide for the darkest, most eerily silent background. I have tried their Superconductor+ and Superconductor 3.

Kenobi

JPS that's good to know....as I have auditioned a few PC's and found them lacking as to silent background. I always knew my cables had a silent quality but never realised how much of a difference it made in the overall sound quality. I find that PC's can have excellant detail...but if it lacks the quiet background it doesn't matter....it makes the whole system sonics degrade. Experience here is about the only way to find out if different cables are compatible or just stick with one brand.... atleast that's what I'm finding out.

Have you tried putting a ferrite core around the power cord and interconnect ends right where it plugs into the equipment? You can try it very inexpensively and will block all RFI from entering your system, no matter which cable you are using.

Proper design in cables alone will not completely get rid off EMI noise and in some cases even RFI. This is because so called high end audio components today are not built properly, poor grounding, poor shielding etc. Yes, you want to have good qiality and properly designed cables that will help not introduce more junk into the components but most components will inherently have some. I was made aware of this when I started looking at properly grounding my components and was further astonished when someone introduced me to a passive filtration device called "Troy" from tripoint audio. After grounding my amps, preamps and Turntable to the tripoint audio box, the level of darkness, clean upper frequencies and just overall space and music flow was jaw dropping. I am an importer/dealer in the South Florida area and I invite any of you to come by and listen to an A/B demo.