With the bridge pickup soloed, the MI-5 had a burpy yet still thick sound. It wasn't so much J-style as a hybrid between a soloed J pickup and a P. It was a sweet mix, especially with some treble rolled off-cutting enough to feel midrange-y and articulate, but also blessed with healthy low-end response. Blended, the pickups were aggressive and remarkably fullbodied. There wasn't a ton of sparkle on offer, but the firm, rich sound is the epitome of supportive-an excellent vehicle for big wholenotes on a ballad, if you catch my drift. Now on to the "mudbucker." Soloed, it's actually not as sloshy as you might expect. It retained a decent amount of focus and definition, and it also had some of the woody bark one expect from a neck pickup. But still, the position means its output will tilt in favor of the bass end, and that was in fact the case. If you play reggae, big bass-y slow jams, and the like, it's the tone: pure fat with a gentler technique, and complex (without losing the fat) with a more aggressive plucking hand. It's a killing sound, and not one you find on many more traditional basses.
Herrera, Jonathan (2014) Musicvox MI-5. In: Bass Player, Vol. 25, No. 11, pp. 54,56. Available at https://openmusiclibrary.org/article/1029267/.