I was wondering, something I often do, if it would be possible to run the 4 piezo signals to 4 separate jacks and mix them externally? Its something I'd like to try on a future project, but I'm not totally familiar with piezo wiring, and would like to know exactly what I would need to put into the signal chain of each piezo output between the transducer itself and the jack? I figure there might have to be some sort of buffer in there somewhere, if so, where do I accuire (or how do I build) such a thing? I don't want an onboard volume or tone, just the simplest, best sounding path from transducer to jack. Thanks all!