I've got an Ibanez SR496 6-string. It has a mahogany body with an OK sound when I put my ear to the horn (unamplified) - but the amplified sound is *nasty*. No appreciable distortion or defects, just "SoundGear *blech*". I read in one post that on the lower-end basses (this was $600 or so), the real problem is the preamp - not the pickups. Would anyone care to comment on the chance of "salvaging" my SR496 by getting a decent preamp (but not pickups)?