I have an SWR Workingman 4004. And it sounds like dog pooh. My bass sounds real nice through an all tube amp which I believe my amp is not. So!! How the hell do I improve my SWR to give it a brighter my lively tone? The problem is that is sounds so flat and compressed and my low end just sounds woody, like the low end on the Brown album by Primus. There isn't any brightness at all it doesn't sound alive. What do I do. Other than buy a better amp.