Our customers, who are already running third party upgraded power cords as well as power conditioners, are reporting getting better sound, not only by replacing their existing power cords but also by bypassing their power conditioner altogether. The ANTICABLES Power Cords appear to be so good at restricting the flow of noise from the wall outlet, that the power conditioner is not additionally beneficial. And, when the ANTICABLES Power Cord is plugged directly into the wall, it has the ability to do a better job of getting the noise out of the component's own power supply, as well as doing a better job at providing unrestricted power to the unit. In most instances, best sound is achieved with a direct connection to the wall outlet.