Seymour Duncan Lightnin‘ Rods Active Jazz Bass (AJB-2) – SetLightnin Rods Jazz Bass active pickups are vintage voiced replacements for 4 string Jazz Basses. Get the increased output level and greater headroom of an active pickup without sacrificing the classic exposed pole piece look. The Lightnin Rods Jazz Bass is an active Jazz Bass pickup voiced for vintage style tone, but with the benefits of higher output level and increased headroom. The clear, articulate attack that makes a Jazz Bass so special is