The Fishman Classic Series Banjo Pickup is an active electromagnetic design w/neodymium magnets and hum-cancelling stacked coil construction. The preamp unit clamps onto the coordinator rods under the head. The pickup sensor detects the movement of a metal shim which is attached to the underside of the head. Runs on a 9V battery (5000+ hours). A standard 1/4" jack mounts on the flange.
For unequalled sound quality and ease of use it's hard to beat the performance of the Rare Earth pickups. Cutting-edge neodymium magnets provide excellent string-to-string balance while the pickup's active electronics keep the sound pure and clean.