Ok I have a question for anyone that can give me advice. I bought a Spector all passive bass. It's a limited edition really awesome looking bass. I bought active pickups for it but it has a passive preamp. Can I put active pickups in it with the passive preamp? Or should I upgrade both? I was looking for a tonepump like my other Spector has but can't find any. Most people say go with the emg active preamp. It came with the Geezer Butler passive EMGs but not really liking the sound. Any advice would be great on adding the active pickups.