Originally Posted by BacteriumFendYoke
It does sound like the pickup has a very high output. Piezos produce their own current so I'd imagine it can be used passively - unless the preamp is doing all the work. Just try taking the battery out. Is there a discrete setting for the preamp independent of the volume output or is the preamp the only volume adjustment? To lower the output would be quite simple if you don't mind getting the soldering iron out!
I'll have to open it up and find out if there is a discrete setting (I'm at work now). I didn't think about taking out the battery, that's another thing to try. The demos I've heard, everyone gets a nice clean sound out of them, but mine is overdriving. I don't mind soldering if I have to, but I'll try the simple things first. It's a very cool instrument.