I had this setup in a bass in the mid 80's. It was a nice J bass that I had put the standard set of Dimarzio J pups in. I ordered the complete set and put it all in that bass.
I remember that neither sound was as good as the regular Dimarzio J pups. I didn't even use it long enough to go thru a set of the little round batteries. Out it all came and back to the regular Dimarzio Js
. I still have that setup in a box somewhere. The pickups of that set might sound good with a real pre such as an Audere J plate, as I've always thought the standard Dimarzio Js
dropped off enough top end to not be ideal for slap. As usual my opinion only.