I just saw Chicago in concert at the Waikiki Shell in Honolulu, Hawaii. Looks like he's got a custom Lakland Jazz bass. It was a 4 string, with a translucent white/blonde finish over an ash body and a maple neck. Single coil jazz pick ups with exposed pole pieces. No pick up cover. Interesting thing is that it had 5 knobs, two large and three small ones, but in a different clustering than you normally see on a lakland. Anyone know about this one? Also, I did not recognize the brand of his speaker cabs. Anyone know what he uses?