Thanks for the replies, ended up getting one of these,

[Link: ji.com.au]

had a spare pc fan, and a 5v phone charger, so soldered the wires together(to power the fan, plugged the AMP into the master socket, the fan, and a few other bits into the rest and it works no worries.

My AMP doesn't have power-out, it's a few years old.

Beauty!