Ferrite Cores for Power cords

Jea48, I have tried ferrite clamps extensively everywhere and you are indeed correct. Too many and it sucks the life out of a system. I think the best place to use them is on the power cord on the cdp. One on each end. Someone sent me a Analysis Plus Power Oval 2 with a ferrite clamp on each end and WOW this cord is extremely musical this way. Take the clamps off for a few minutes and more grain is added. It was very noticeable. This cord was not good on the amps but great on the cdp. My recommendation is to start at the cdp and work your way down. My system has changed recently so I may go and throw a couple of clamps on the ic's from cdp to pre. If the sound darkens or closes in they will come right off. I have not played around with these for a while except when I received the power cord I am using now.
Find a real good price on a used Power Oval 2 and put two of the box type ferrites clamps on it. I don't think enough can be said about rfi entering and exiting the cdp.
Digi-key has all kinds of ferrite clamps too.

There are a lot of things I would like to do with the incoming power but that will have to wait. Two very young kids will put a stop to most anything that requires a lot of time on a project. I would like to try better sheilded romex on my dedicated lines eventually and I know some who have done this with good results.
Two days ago I put some ferrite clamps on my Reality cable ic's from the cdp to pre. Two clamps coming out and one clamp going in. They are not coming off of these ic's and I did not think to try them again until reading this post. These ic's are fairly new in my system and they do not have a lot of insulation/shielding around them. The high frequency did not roll off and the mid range became more coherent. Less noise less grain. One thing I did notice is that the ferrite has to fit fairly tight over the cable. These probably won't work on all ic's but the ones that do not have a lot of insulation or shielding may benefit with ferrite clamps. It Would have been interesting to put these around the Anti Cable ic's I was using at one time. Audio Metallurgy GA-0's use a magnet all the way down the middle of this ic and that seemed to roll the highs off for me too much. They are real good for a bright system. Still acts as a ferrite however.