Might be wishful thinking on my part, but I've currently got 3 amps connected to my receiver, and being the lazy bastard that I am, I'm getting tired of having to get up and MANUALLY push 3 buttons to turn these suckers on, then later having to get up, yet again, and push 3 buttons to turn them off.

Anyway I can buy or whip up some sort of signal detecting "auto-on/off" device to save myself all this effort? Just need to turn on when the receiver or pre/pro feeds a signal, and turn off later after no signal detected...this can't be too hard, every subwoofer plate amp sold today has these by now.

Any ideas?