I tried a proline today and liked it alot. I would love to try a jazzman but no one carries them around here. Now the jazzman has a MM style pickup and a single coil. You can switch between a 2 single coil or just the MM pu, which is cool. You can't switch from active to passive however, which is not cool. The proline has a mec preamp (as i said i liked the sound of the proline allot) and the jazzman has a basslines preamp. Now does anyone know how the jazzman sounds? or how it sounds compared to the proline? is their a significant differance? and has anybody tried a sadowsky pre (i have an outboard version I use with my fenders)with a warwick? thanks for any input.