I am looking to buy a 2004 warwick corvette five string. It looks like a standard and the tuners say Germany on them, which make me believe that it is legit. The seller is saying that it has active pickups, but the bass looks exactly the same as the corvette that is active/passive. I thought that if it was active/active that it would be an 18v system. Is this true and is there any question i can ask the seller to find out for sure what kind of pickups it has. I think he has mislabled what he is selling. Can I get some help here from the pros.