Dedicated power,long power cords - waste of time?

Rgd

I installed a dedicted line for my equipment and did not hear a substantial improvement; maybe a blacker backgroound. So IMO depending on the quality of your power; mine is pretty good, you may or may not hear an impact. I would, if you havn't already, install a couple of good hospital grade outlets in the outlet box you are currently utilizing and upgrade the power cords on your equipment. I am not familiar with your power conditioning unit but you might want to try active power conditioning as well.

There is no-way I would use 20 foot power cords as the cost alone IMO would not be the most effective use of your dollars. I believe there are a couple of easier tweaks available to get you close to dedicated power; such as the ones mentioned above. I am not an electrician but maybe there is a way to install an isolation transformer on your existing line;again just some thoughts. In closing I would try and find an electrician who understands your situation and get some ideas.

Chuck

If you already have one dedicated line that does not require long (and consequently potentially very expensive) power cords, I would be really cautious about saying you definitely will find an audible improvement adding the two extra lines under these circumstances. If you could plug straight into the wall, you probably would hear a clear improvement. But the really big sonic upgrade seems to be going from no dedicated lines to at least one, which if I understand your post, you already have. Depending on what power cords you are thinking about using, this could be a very expensive undertaking indeed. The lines themselves could be done for less than $500 in most cases, but power cords of this length could easily run many times this amount by themselves. And long runs in cords/cables are never a good thing sonically to begin with.

Rgd
I agree with Chuck, talk to your electrician and get his idea on how to best run dedicated lines close to where your rig is now. There are usually ways of snaking lines from the panel to the new location even without access to the space above or below. The electrician might have to open small holes (for snaking wires) in the walls and/or ceiling but these are easily repaired. Good Luck.

If you decide you really do need to run 20' power cables it's possible to very easily make them up yourself. You can create a shielded power cable for about $75 with some of this:
Cable
One of these:
Male plug
and one of these:
Female plug

There's no soldering involved and it shouldn't take more than 15 minutes to do.