i have been playing around with graphics and parametrics to try and emulate the wall tone and have been partially successfull. What i really want is that sound of each string to be well defined and have that servere clean square wave rasp. Is this possible without having active pickups and which bass would lend itself to this . I was looking at the g&l l2000 which seemed to display this sound to some extent on a badly setup fretted in a shop the other day....unfortunately a fretless was not available to try out but i might order one and then use my various tone models to see if i can really purify this sound that i am after. I was also wondering if heavier gauge might be the way to go....roundwounds are a given for this i am sure....any comments guys? ps...another thing is that i have used and owned wals in the past (one of which was a tulip wood amazingly enough without active pickups) and the ones without active pickups are not that much to speak of....it must be all in the electronics as i am sure everyone seems to agree on.