So I've picked up my first active bass. A 10 year old Fender, MIM, p/j. This bass really thumps, and I like it but was wondering about the sound that I'm getting. It is very compressed with sort of a "dooowop" sound to it. It's subtle, but you can hear it. Is that the typical sound of an active bass, or is it just typical for MIM Fender preamps? Do the better and newer preamps (aguilar, sadowsky, etc.) have that same compressed quality?