I'm using ARC's balanced interconnects between my CD-7 and Ref-3 with excellent results. I recently replaced my old custom power cords, which were much better than the stock ARC cords, for Magnan ribbon power cords. The improvement in transparancy, expansion of sound stage and tonal balance is simply amazing. I would recommend Dave Magnan's ribbon power cords over all that I've heard. My next move will be to replace the ARC balanced interconnects for Magnan's 5i balanced ICs.