Considering a Behringer A500 or EP1500 Amp to power my Non-powereed subs. I don't see any built-in 12v trigger on the Behringer's. I will be running this from my Yamaha RX-V659 sub out. Is there a manufacture that makes a 12v relay to turn on a 110V power strip ? I guess if I had to I could get a 110v relay and run it off one of the 569 powered plugs. I have seperate 20A circut wall outlets to run my various components from and would like to take full advantage of this while having a Auto startup when the 569 is turned on.