I have a power amp that can turn on by a 12v trigger cable. The receiver that I have can provide that 12v trigger. But nowhere can I find the spec for that cable. It looks like a 3.5mm jack but it is a mono, stereo or one of those 3 channel style connector on the end.

HELP

3.5 mm mono cable . The tip is hot and the shaft is the ground. its been a while since I connected mine but I think you can use a stereo (trs) . My stuff is hard to get at or I would try it for you.

I'm using a 12' stereo male-to-male 3.5mm which works perfectly.