A while back I purchased an Aguilar OBP-2 preamp to be paired with Bassline pickups. They sound great together. Recently I have decided to take my tone in a different direction and purchased some EMG's (EMG P, and EMG MMTW, to be exact). They are the quick connect type (solderless) connectors. I know it's possible to remove the connector so they can be hardwired. My question is, what kind of pots do I need? I think I need 25k for the two volumes, but what kind of pot do I need for the bass/treble stack? Did I make a huge mistake in assuming that I could connect active pickups to an 18v active preamp? I know some of the higher end Spector basses have EMG's with Aguilar preamps. To make my question(s) more straight forward: If even possible, what pots do I need to join that preamp with these (active EMG's) pickups?