I was looking for a recommendation. I'm looking for some beef to add to my Fender Jazz. I want something that wont revoice my instrument, so please dont recomend the SansAmp Bass Driver. I just picked up both the Sadowsky, and the Aguilar outboard preamps, only to be diapointed. They are great units, but they smooth out my bottom end more then I'd like. I love my passive growl, and by no means want to loose it, so I'm looking for something very transparent, that will perhaps warm things up you could say, and add some beef without smoothing out my tone though. A tube pedal maybe? Anyone?