Nope, Jazz bass straight down the line. I’ve got a P for the odd occasion when I feel like a change, but for me it’s Jazz bass, Jazz bass and thrice Jazz bass.
Thanks for this, I'd forgotten all about the Jaco exercises. I have the book (somewhere) and have only watched the video once; I just find it too sad to rewatch.
Higher gain at the front end increases the level through the rest of the circuit and gives a better signal to noise ratio. I prefer to run the Gain as high as I can and leave the Master as low as I can get away with.