If anyone has firsthand knowledge of Bill Lawrence Jazz bass pickups (also known as "J-45"), I would appreciate any opinions you could offer. I'm looking for adjectives to describe their overall character (vintage, warm, modern, bright or whatever). I'm particularly interested in these pickups since they are humcancelling, as well as the fact that they're relatively inexpensive ($48.00 each). Also, if anyone has used these pickups in combination with the John East J-Retro preamp, I'd love to hear opinions of this as well. Thanks in advance!