I get the sense that you should put a buffer as early as practical before a long cable run. It would seem that the longest cable run I have before a buffer is my main cable from the guitar to the board. It seems to make sense in my head then that I should just throw a tiny buffer in each of my guitars to help my signal the most. What's the best small buffer design that I can put in each of my guitars? I don't mind building it myself if someone just points me in the right direction. Is there any reason to not do this? I don't mind throwing 9V batteries in the guitars, or wiring to use a stereo cable to run 9V through one of the pins on the cable.