David built and assembled this one for me a few months ago. Here's the original NGD thread: http://www.gretsch-talk.com/threads/ngd-eman-starcaster.194960/ However I had broader goals for the guitar, so I brought it to my guy Ted Vig in St. Paul and he put in a Graph Tech Ghost piezo system. The controls are electric pickup selector switch on the upper treble bout; Piezo only - mixed - Mag only selector switch & piezo volume on the upper rear; electric tone & volume on the lower rear. The piezo pickup sounds good on its own although course no one will mistake it for a real Martin. Blends well with the DiMarzio Eric Johnsons, which are brighter hum buckers. Jack is single output with a mono cable or dual output with a y-cable. With the regular cable it sounds very good played any way through the Electromatic 6161 amp the guitar is resting on. With a little help from Kokopelli too.