hmm, I haven't found the techie answer yet from my board notes ... and the tone shaping qualities sound good, except I have all that at the board, and a (hopefully) someone there who not only knows how to shape it, but can hear it through the house, too. I do have a fishman pre-amp DI with some good shaping and anti-feedback features, but I suspect for this application (general acoustic instrument pick-ups, used in sound stage setting) I'll be wanting a pretty vanilla DI - in fact, I also need 6 or more of 'em, so need to keep the cost low (preferably very low)!