This is a replacement pickup for Music Man style bass guitars. It is a passive humbacker pickup, which has a wider frequency range and richer overtones than the stock pickups. You will probably forget your active electronics as well, because this pickup can produce a better sound naturally.
The pickups are all hand made with the highest quality parts and with the finest craftsmanship. The building time of the pickups are about a week, so the delivery times could vary. The pickup fits in to the place of a standard Music Man pickup.