My fear with swapping out the systems is that I'd have to drill another hole for the extra pot. And if I don't like it I can't go backwards. The new preamp comes with master volume, blender pot, and bass/mid/treble pots (5 in all). The Ibanez comes with two volumes, master tone and a bass boost. I'll probably play with it stock for awhile. I won't mod it for at lest the 45 day return period. I like DR Pure Blues. I've got them on my Fender Jazz 5er and had them on my BTB and Yamaha 605. The BTB and 605 now have D'Addario NYXL's and I think I like those better on those basses. But the NYXL's are a little pricey so when I change I'll probably do the Pure Blues for this bass.