Will I reduce the performance of my amp/receiver if I use an appliance-rated (heavy duty) extension cord? (You know, the kind they sell for air conditioners and the like.) Also - and I hate to start a whole new thread for this, so maybe someone can confirm - can I use a video cable (the yellow one!) for an audio digital coax connection? I've got a Monster video cable collecting dust at the moment, and I've heard tell these are identical to so-called "audio digital coax". I'd like to try it out in place of the optical cable I'm currently running to see if there's any improvement in sound. Thanks!