Copper Sleeve over IEC

OMG, this tweak REALLY works for my system. The power cable for my DVD Denon-5910 is 1M long and everytime I slided back far away from the CD end (IEC female plug) it degraded sound quality in both instruments (guitar, violin) and Diana Krall "The Girl In The Other Room." Engaged it back on and the sound was just beautifully sharper, instantly. Unlike any IC and PC that I have tried on my system, this OZZY tweak (lol, in this thread, you brought it up, you earn it!) remain the same characteristic but much clearer and sharper. It's a step closer to high-end sound like the Esoteric DV-60 that I auditioned before in my system. I would say more like Hi-Fi sound; very define and crystal clear.
My system was very warm and musical before but now it's more like Hi-Fi sound, not a bad way, not a good way, but I just stated to show the compare and contrast for this Ozzy Tweak.
I was gonna wait till my wife come home from work so she can help me slide it back and forth for my blind test, but after quickly going thru it, I confirm that Ozzy Tweak is really work. I used couple "clear brain" techniques to asurely this is not my imagination, and it is NOT. It really works.
I'm so excited now so my rating for differences might be unfair and bias. If I have to throw in a number, it'll probably like 15-25% sound improved. ( I just edited and crank it up from 10-20%)
I'm taking the extra piece to my friend who has higher end system, and I will keep on update more later.

Gentlemen,

What do you think of this shielded coupling at a higher cost of course. However, it comew w/ a nice neoprene gasket fitting. Unfortunately, its currently out of stock.

http://www.buyplumbing.net/index.html?pg=pd&_i=3003150

Regards,

Luc

This tweak works great on my friend's system. Great improved on audio. We tested on DVD mode using his Bob Scacces disk, but there's 1 technical problem. After the 2nd attemped, audio still playing but the video went blank (showing no input) everytime we slided the copper over his IEC (Nordost) even on diff DVD disks.
His DVD player is Ayre D1-xe comes with original equipted seperate power supply. http://www.ayre.com/retired_detail.cfm?productid=4&field=specs
The video works fine on my Denon DVD-5910.
I predict that this has to do something with magnetic field...

Kenk168 , Its all about the sound. If it costs $14 but improves the sound even better then go for it.

However, thus far, I don't have any problem with the ordinary (cheap) Copper sleeve not fitting snug to the power cable and it doesnt fall off.

I think the fitting with the neoprene gasket may be overkill.
But, keep us updated.

Nasaman, Strange about the Ayre D1-xe DVD player.

I have put copper sleeves in my Video system too.
Didnt work too so hot on my Denon 5.1 Reciever.
But worked great on my DVD player(Denon 5910) and on my DVD Recorder. The DVD recorder really has now a better picture.
I also put one on the AC end of my Sony LCD. Each one added improves more.
I think these sleeves work great on almost all digital.