As I recall, the multichannel amps come with trigger cables but the monoblocks do not. The 2200 does have an automatic mode (turns on when sensing an audio signal), which is what I think Outlaw anticipates as the most common solution for powering on these amps. If you want to use the 12V trigger, a 3.5mm or 1/8" mono cable can be had from Radio Shack (although I couldn't find it on the web site) or Monoprice.