Copper Sleeve over IEC

03-17-09: Rx8man
Good news Ozzy and tweakers,

Went to Lowes, bought a 1-1/2"x 1-1/4" copper coupler-reducer stock #89479 (smaller end fits closer to the IEC end plugging into component) $3.47 YTMV (your taxes may vary)

you lucky so-so Rx8man! I went to Home Depot & Lowes yesterday & NEITHER had any copper couplers larger than 1"! :( I showed them the stock # at Lowes & the fellow came back & said that it did not exist in their system! Where else can I buy a copper coupler? I need atleast 1- 1/4" for the IEC & 1-1/2" for the male AC plug.
Thanx!

Ozzy, Thanks a lot for the website links. Indeed it was too bad @ the local home improvement stores.

Undertow, thanks for the detailed explanation - looks like a 1-3/8" reducer to 1-1/4" will do the job. I do have a local ACE hardware store that I can try. I will take my IEC along.

Rx8man, thanks for your kind words re. the Scintillas! They sound as good as they look but need a brute of an amp to do the job. These speakers belong in the "Society for Cruelty to Amplifiers"!! ;)
Yes, I did discover McMaster-Carr. If my local ACE store does not work out, I'll order online. Thanks for the M-C suggestion.

Here is my feedback FWIW:
I bought a few copper couplers - 1-1/4", 1-1/2" & 2". One side of my power cord is less fat than the other side hence I need a 1-1/4" on 1 side & a 2" on the other. I put copper couplers on the CDP power cord, power cord to the PS300 unit & on the RGPC 400 Mk1.
I've had just one reasonably long listening session & so far the conclusion is - no positive effect & also no sound degradation (whew!). In the back of my mind I really did not expect anything much to come out of this tweak as I live in a fairly RF clean environment + I believe that my CDP does not splatter much digital noise. Additionally, I have several other tweaks - dedicated lines, damped rack, damped chassis, elevated cables, Faraday shields over the magnets in my power cords, etc. All these items did make improvements & they've added up each time I tweaked.
All-the-same, I'm going to leave the copper couplers in place & listen more. In my system this seems to be a subtle tweak & subtle tweaks take time to settle in & time to discern.