I need a trigger cable to make my Rotel 1066 turn on and off the 1075 power amp. Any idea of what I need (or need to make?). I have some old PC KVM audio cables which are basically stereo 3.5mm jacks on the ends of a lead. Will these do or do I need mono plugs? Any ideas? Don't want to spend more than a couple quid on this although I'm aware a Van Damme £150 trigger lead may improve the upper mid range of my system.