I liked the neck 'bucker all by itself the best and felt that the 'acoustic' bridge was anything but. We ended up with a whole lot of options but frankly none of them very good. We brought the piezo signal out to its own pin on a stereo output jack - that way it could have its own signal chain, it goes to a DI for impedence matching and then to a separate input on the amp. The piezo signals are collected on a little PCB and goes to its own volume control. He also added a ToM style bridge with a piezo crystal in each saddle, there are six shielded wires coming from the bridge It ended up with two SD humbuckers with the little switching rings that lets you split the coils and either series or parallel them or each by itself (I know you aren't asking about that). He decided to put together one guitar to do it all and asked me to wire if for him. My son plays in a P&W band and used to haul several guitars to the gig to get the various sounds he thought he needed.