In another thread people were mentioning that when clipping with a tube amp the bass sound comes out like overdrive. I have no idea how to achieve this sound can some one explain it for me? And do you mean overdrive like a distortion pedal or overdrive like some growl on the low end? I believe this is the sound I have been trying to get so I really need help. Also I have an SWR 4004, is this effect possible with solid state? When I clip I just get the farting noise.