I have a little bit of time playing jazz, but I don't get the right tone that I want. I have a fender precision with flats on it, have a peavey amp (3 band eq) and a Galien Kruger (5 band qb), but I never find the right spot or tone on those amps. Can someone tell me how do you set up your amp? I don't want to sound like a double bass, but I want that old, classic, deth sound. Thank you guys.