There�s a reason this is our most popular Bass 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 a 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 and is available in 4 and 5-string configurations. � Hand built in Santa Barbara, CA, the massive Quarter Pound high output P-Bass pickups use �� diameter alnico 5 rod magnets, Forbon flatwork, and are vacuum wax potted for squeal free performance. Comes with black covers.