Current Sensing Switchable Outlet

[dave]

I need a current sensing switchable outlet
to turn on my sub when the amp is turned
on.  I've seen one for arount $200, and am
looking for a cheaper solution.

[dave w]

Unless your amp has some kind of control
voltage output which you could use to
trigger a powerflash module, you probably
aren't going to find an X10 solution (and I
assume you are looking for an X10 solution
since asking on this forum).