Nex- I responded to the other thread of the same title. Anyway, try the FIM A/C duplex instead. Nice sonic improvement over the Hubbell Hospital or Heavy-duty (preferred over the Hospital grade because nickel isn't used as a contact material) duplex when I compared them in my system. They retail for about $50-55 per duplex. Contact Bobby at Sound Trends at 800-726-7293, or for an East Coast dealer eAudioNet. I think Sound Trends offers free shipping in USA over a certain purchase level. Goodluck.