My Pioneer Spec 1 preamp and Spec 2 power amp use unbalanced RCA connectors to interconnect. In my new listening room I would like to separate them by about 30 feet so I think balanced is the way to go. Are there converters for this? I have seen some discussion on baluns but aren't these passive devices? Does balanced need an actual active circuit for the connection in order to take advantage of the benefits? Anyone have a procedure or plan to add balanced in/outputs to an amp set up that only uses RCA?