You're welcome, Sarah. I have 3 dedicated lines installed for each of my components but this has nothing directly to do with line conditioning.
As for the Foundation Research LC-1 and LC-2 passive in-line power conditioners, these are basically power cables with a little 2" x 7" by 4" block box in the middle of the power cable. These act as bi-directional line conditioners / filters. The bi-directional certainly helps in the case of digital noise going from the digital source back into the wall and then into other components (assuming they are sharing the same circuit).
Marty DeWulf of Bound of Sound reviewed these in August, 2003. He's been a stickler for proper line conditioning for perhaps the past 10 years or so and he claimed this to be the best he's ever heard and purchased them for his 'big rig'.
There's actually 3 or 4 for sale on Agon right now. Rarely have I ever seen even one for sale used.
I have some pics of these in my virtual system if you care to see what one looks like.
BTW, an LC-1 or LC-2 costs only about as much as a decent power cable and since they include a power cable, are well worth the investment.
-IMO