Signal Power Cord with digitial components

I recently purchased a Signal Power Cord for my Audio Refinement amp and was instantly blown away by the improvement in the soundstage it gave over my stock cord. Now I am thinking of getting the digital power cord that is offered by them for my Audio Refinemnt Pre-2DSP and my future Integra HD-DVD player. I was wondering if anyone has tried this cord on their proceessor or a HD-DVD player. Thanks