I have the Adcom unit that has the nice feature of sequencing the power on and off with appropriate delays. But if all you want is a relay, buy one from Radio Shack and build it in to a regular electrical box.
Power relays to turn on amps
I am looking for a power relay that would plug into the switched ac plug on the back of my pre amp that would, upon activation, throw a relay to power up my two amps and CD player, among other things. There was one for sale here on audiogon made by McIntoch, but that's gone now. Any ideas about who makes them?