I have a six string Cort a6 bass that Ive had for years but Ive never liked the pickups in it when passive there to week I have bartolini mk1s in there and the pre amp the treble is way to high in treble and is un usable and the mid and bass are ok I have a master vol balance and mid treble and bass set up but I would like a master vol, balance, passive tone, and mid treble bass E.Q with a parmetic mid I would like a Jaco sounding bridge pickup. Can anyone help on what to get I dont know much about bass pickups and pre amps I want a Jaco sounding bridge pickup