I started a thread yesterday, but want to be more specific. Just purchased a Rockbass with passive MEC pickups and an active preamp. Some RBs have passive/passive, some passive/active, and some active/active. Questions: 1. Will a passive bass with an active preamp sound exactly like a passive/passive bass - if the EQ is set flat? 2. What is the difference in sound between passive and active pickups, if they both have an active preamp? I'd love to know specifically with the MECs but wondering also if there are any common, general differences.