Thank you for viewing. This is likely a unique combination of a Fender Acoustasonic circuit board + piezo + knobs, etc. This preamp + piezo was co-developed with Fishman and has a certain reputation. I was planning to improve this circuit board and create a better routing setup, but I ended up adopting a different type of routing, so I had no opportunity to use it and it has been left untouched. In other words, it's in the middle of being modified, so its functionality is uncertain. Specifically, I remember extending the wiring to move the knobs to a different position and adding a direct switch from the wiring near the output. Included accessories are the Acoustasonic original knobs, washers, end pin, etc. Please note that this is a no-claims, no-returns item, sold as junk. If it sells on another site, I will cancel the listing. Thank you for your understanding.