Seymour Duncan SPB-3 - P-Bass Quarter-PoundTheres a reason this is our most popular Basslines pickup massive tone. The QP has a fat, punchy tone that pushes P bass pickups past previous models with design and frequency improvements. The quarter inch diameter pole pieces expand the magnetic field and extend the frequency ranges for fat, full, punchy sound with tremendous mid range presence and maximum output. Though often used for heavy rock tones, this pickup gives amazing tonal versatility,