Niles SAS-1 is designed for this situation. It is much like Stickleda's idea, but the work is done for you, you don't even have to know how to make a relay work-- just hook it up and go. Trigger it with a cheap wall wart DC power supply running of a switched outlet on your HT gear.
There's even one on Ebay right now cheap. It's not perfect, since there will be relays in your speaker cables, and extra connections, BUT, I don't think there's another way.
If you wanted to, you could probably mod it to use some audiophile approved relays and then write a review for us...
There's even one on Ebay right now cheap. It's not perfect, since there will be relays in your speaker cables, and extra connections, BUT, I don't think there's another way.
If you wanted to, you could probably mod it to use some audiophile approved relays and then write a review for us...