Any rockabilly bass players out there,I need some advice please.I all ready have a fender rumble 40 v3,and i love the sound.I need volume now,will the fender rumble 500 combo give me that for band/group gigging in a rockabilly set up.I will have to order online as there are no shops near by.I use dirty gut strings and a k and k bass max pickup,no preamp.With my fender rumble 40 v3 i do not need a preamp.Can i have a number as well with having a rumble 40.