TH- www.brickwall.com might be what you're looking for...

Everett- Be careful in assuming that AC power conditioners can be lumped into the same catagory as interconnects. Check out the reviews at www.hometheaterhifi.com. They show that balanced power helps to reduce jitter in a crappy portable DVD player.

And if you look through Equi=tech's site, www.equitech.com, somewhere they say that peak jitter is reduced by 2/3 and average jitter is reduced by 1/2 using balanced power. That is real results. No simple "filter" can claim that...