For me there is some confusion about Goin' Direct. For instance, sometimes folks imply that they literally plug the other end of the instrument cable into "the board" and the board only (no amp) and that this gives them "the cleanest possible signal". Othertimes I hear Goin' Direct means plugging the instrument cable into a DI and an amp and maybe a third something or other. So my questions are: Which way is it? Both? What's the core purpose of the DI? Why is a DI needed?