Tplavas - you are correct, but only because Terry mis-stated what Cardas says about their Neutral Reference. Neutral Reference has the same sonic characteristics at 30 feet that it does at 3 feet. If you like the sound of the system with the 3 footers in it, the system will sound the same if you substituted 30 feet (of the Neutral Reference).
Now back to Terry - what brand/model components are you connecting with this long run? Is it single ended or balanced? Let me know and I will try and help.
Um, no.
There is no such thing as an IC that sounds the same at 30 feet as it does at 3 ft. That's fact. I respect Cardas products, but there is no magic that can change the electrical differences inherent in an extra 27 feet of IC cable, or 23 feet in Terryakhan's case.
If Cardas can make such a product, they will have many curious physicists knocking on their door.