Copper Sleeve over IEC

La45, What is double copper shielding?

Nasaman, I liked what the copper sleeve did for the Video. But, in my system with everything now plugged into the Synergistic Powercell too much cooper dulled the Audio high Frequencies. I need to put my Video on a different circuit and then I will re-attach the Copper sleeves over the Video.

Tbg, I disagree, there is a marked improvement to the Synergistic Research Hologram A power cord IEC with the copper shield over it.
However,I have discovered that with the use of the Synergistic Powercell and using the Acoustic Revive RR-77 in the system, the copper sleeve shield over the Hologram A IEC has no longer the improvement. Must be too much of everything attacking the RFI/EMI.
Norm, I think you have both of these items in your system, is that correct?

Ozzy, yep. It is an interesting concept of too much copper dulling the high frequencies. I really don't understand why a conductor with no ground would do anything.

Ozzy, double the copper, you know, 1/2" inside a 2" copper coupler with a foam film in between. I am using Alan Maher's Power Enhancer also, all are fine tuned for music.

I have a live sounding room so the high frequencies are just fine. I've been using copper as a shield since my Marantz days. Nice improvement on my HDTV too. Acts as a shield on any open unused inputs.

After installing a copper coupler over the IEC connector feeding my CDP I tested it with a simpler version of the tester used in the Marantz video. The meter registered as if the coupler weren't there. A bead of Blu-Tac substitute was holding the sleeve in place, so it was removed and the meter no longer registered. Adding several wraps of Teflon plumbers tape around the connector held it in place and allowed the sleeve to work its magic.

I don't claim to understand why, but can't ignore the empirical evidence and thought the results might be of interest. Thanks for the great tip.

Since I have found, along with others, that aluminum is a better shielding material that copper or steel, I would whether simple and cheap aluminum duct tape would be better and would, of course, be easily contoured to any plug. I doubt that it would do anything for Synergistic Research power cords that I use, so I won't be trying this.