Well I reached out to Goldpoint directly to see if they would be willing to make a 12v triggered, relay actuated version of their Goldpoint SW2X-I. Arn at Goldpoint was pleasant to deal with and agreed that the ARX switcher was a clever implementation but no joy I’m afraid. So now I’ve reached out to a local high-end AV tech to see if he thinks it would make more sense to hot-rod an existing ARX unit with better jacks and wiring or to clone and scratch build.