Large diameter alnico 5 rod magnets and a high output coil wind deliver the most tone and attitude you could ever want in a P Bass® pickup. 

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• There’s a reason this is Seymour Duncan’s 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, making it a favorite across the board in live and studio settings. This pickup is a drop-in replacement for any American Standard Precision Bass®.
  
  Hand built in Santa Barbara, CA, the Quarter Pound for P Bass® uses diameter alnico 5 rod magnets, Forbon flatwork, and is vacuum wax potted for squeal free performance. Comes with black covers.
• Size: 
  2.25” [57.15mm] Long
  1.09” [27.69mm] Wide
  
  
• Seymour Duncan SPB-3 Wiring Diagram
  
  
  OUTPUT

  • DCR: 11.5
  • MAGNET: ALNICO 5
  • CABLE: PVC LEAD WIRE
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• Below are impressions and anecdotal thoughts gathered over the years. Some are our own and some are from customers.

  
  

  • "I can get huge bottom end and clear highs and mids. My bass is a lot more punchy now".
  • A stand out pickup for rock players who have trouble cutting through the mix of drums and guitar.
  • Great modern rock tone and clarity. The dynamics or the strings are really carried forward.