I'm getting ready to order a new Lakland. Looking at a US Joe Osborn. I have all the options figured out but one and that is the option of the J-Retro on board pre-amp with the 3 band Eq, sweepable mids. Anyone have experience with the J-Retro? Thoughts on it? Wondering if I should just leave the Joe as a Joe and go passive. Mucho grassy ass for any of your experiences with the J-Retro.