I feel that this thread really needs to be revived. All I can say is wow! I came across this thread through a link in Jim Smith's quarter notes (which come with Jim Smith's Get Better Sound DVD's... which I also highly recommend). I bought a couple of the sleeves (1 1/2 " plumber unions at Menard's for about 4 and a half bucks each). I had them sitting in a bag for a couple of weeks before I thought I might just as well try one on the ICE to my Sony XA-5400es player. Well everything got better...small details that weren't there before, layer and depth to soundstage, smoother and everything has more weight and air. I now have them on both ends of cd player and one each on IEC end of PS Audio PPP and integrated amp. I am stunned at what I now hear. The whole room seems to be alive now with music. I am a big believer in tweaks as I have incorporated many in my system with very good results but this is off the scale especially considering the low low cost. I can assure you that I wasn't expecting much if anything! I almost forgot my cables are 3 Juice II power cords by Wywires. Please give it a try there's a good chance this may be the most cost effective tweak you have ever tried. I feel as if I have upgraded my speakers and cd player for less than $20.00. I also noticed that the the system plays louder than it would at the same setting on the volume conrtol on the amp than it did before.