I have a set of emg 35s on my bass, and I tried to replace the preamp with the Bartolini HR4.2. Correct me if im wrong, but I just learned that this combination dosent work. Apparently, the emgs are passive pickups, and the bartolini is an active preamp, at least thats what ive been told. If thats the case, what is a better preamp to use? I think it used an EMG preamp before, not sure the model, but didnt sound too great. Is there a compatible preamp that will work with these pu's, and will sound good?