Thank you again Brian, The 50K is an integral part of the boost and it is actually the volume pot for the guitar. The stacked pot you see in it is the TBX tone pot. It's a dual gang 250K with a center detente. The boost control is a regular 250K. The Circuit is powered by a 9V battery and I am hoping to be able to fit it into the control cavity under the volume pot. I don't believe the battery will need to be changed very often. I haven't ever had one of these so it is a learning curve for me but I can't imagine it drawing that battery anymore than a set of EMG p'ups. As far as the switching I decided to go with a TRS plug so that when I plug the guitar in the plug will be the switch for the circuit like on an EMG loaded guitar. I also really like the profiling on this body. it is very comfortable in my hands while working with it. I can't wait to get this one together so I can get a feel for it as a player.