I just went and poked around a few pawn shops. One that I visited was rather funny, the car audio stuff they had on display still had the terminals connectors on the amps that showed obvious signs of being torn apart along with broken mounting feet, The HU's showed similar signs of being torn from their mounts(missing remotes, damaged harness missing trim rings) and loaded sub boxes also showing signs of being torn out.
I don't think they had anything that didn't look like it was stolen, you would think they would try to mask the fact that the stuff was stolen.
Oh well, at least I'll know where to look if my stuff gets ripped off.