The bass is brighter in active mode, regardless of knob setting. I'm sure some of it is the lower impedance and less loading, so the signal is not mellowed out via cable capacitance. I also wonder if there isn't a little treble boost baked in. It was pretty common to do that in the 70s and 80s with active preamps. Early Stingrays, my G&L El Toro and other basses of the era usually had pretty bright preamps and some had treble boost mode in the preamps, too. I did a small resistor mod to make the active mode more smooth like the passive mode in my G&L. Perhaps there is a similar mod that can be done to the Dyna pre to do the same?
this may be the reason I like this active bass... I generally prefer passive---when I flip over there isn't any volume difference--it just changes the tone a tad brighter--then I can adjust with the knobs--still sounds passive ish/open and airy like I like
