I just bought a new MTD Heir 5 string with the active electronics and it is a sweet Bass, however I'm not really thrilled with the tone. I would like to change out the preamp. I'm looking for suggestions for a preamp. I would love a real beefy in your face Bass tone and yet still be well rounded on the mids and treble. I don't slap much but that's not to say I would not like to down the road when I improve the skills. So info on the Bass: It has two passive pickups, a jazz at the neck and MM style at the bridge and it has a vol/blend treb/mid/Bass 5 knob setup, it has a decent sized cavity and I am not opposed to drilling a hole if need be and adding a mid select switch. So what do you guys think??