Hi David, I have been wondering about the same thing. I just bought the Harmonic Tech. Cyberlink Platinum interconnect and am currently breaking it in. I have read at the PLANET HIFI website that H.T. recommends that you use their power cords in conjunction with their cables to get the best results. I have the Denon AVR-5700, which has quite a hefty cord of its own and would appreciate some advice as to if I can expect to hear an improvement with a new power cord. Good advice Jaguar,thanks.
