I have a Dillion Stingray clone that I like very much. It has a really good sounding passive pickup in it but I've been thinking a bit about making this bass active. Am I able to do this with a normal passive pickup? I've heard a lot of good things about the Aguilar OBP-1 preamp and was considering placing this in the bass but I don't know about that b/c you have to have 18 volts to run these pre's. Also I read somewhere that the pickups they use in my stock Stingrays are actually VERY low output before the preamp. If I do decide to make this bass active, am I going to have a problem since the pickup is already plenty loud in its passive state. Maybe I should just leave it alone since it sounds good as is???