Alright, I guess I should put up something beings how I was the one helping Will... This is my old amp and sub that I had in my vehicle and before that we had it in another buddy's for a couple weeks...The amp does not have a "master" kill switch but does have a LED status indicator (shows power/protect) and it is always on "power". The amp also has a built-in crossover which is set pretty nominal right now...

The main concern is that the pre-amp outs on the haedunit arn't working... I'm gonna try it in another car in a day or so, but I don't understand why pre-amps would just go bad..?