I have a wonderful Mag/Piezo bass. It's well detailed in the following thread: http://www.talkbass.com/forum/showthread.php?t=330271 I have found that with a Euphonic Audio iAmp 500 driving an Avatar neo 112, with Elixir nanowounds, I am hardly using the Dark Star, Most of the time I'm set for piezo only and I am really liking the sound I am getting. very full and bottomy, with a fretless mwah, particularly in the higher register. However it still has some growl down low. How do those of your with Mag/Piezo hybrids run the balance on them..what strings do you like? what is your tonal goal anyone who is a master of toneshaping on the iAmp, I'd love your suggestions!