Detail 01
JJ configuration
Two single-coils. Run both at equal volume and they cancel hum; solo one and hum returns.

Independent shopping perspective
Replacement Jazz Bass pickup set with slightly mismatched neck and bridge output. For players restoring or upgrading a J-style bass, not first-time solderers.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Two single-coils. Run both at equal volume and they cancel hum; solo one and hum returns.
Detail 02
Low, close to vintage-spec output. Clean and dynamic rather than hot; leaves room for pedals and amp gain.
Detail 03
Low inductance keeps top end open. Expect the bright, articulate J top rather than a dark thump.
Detail 04
Balances the bridge position's naturally thinner output so both pickups sit at similar volume when blended.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
They fit standard J-style routes, with the bridge pickup longer than the neck. Measure your cavities first, since some brands use different sizes.
No. They're single-coils. Hum cancels when both pickups are at full volume, and returns when you favor one.
Not meaningfully. At 7.25K and 7.5K these are vintage-level output, so this is a tone and clarity change, not a volume boost.
Only if you solder. Each pickup wires to the volume pots and ground. A tech install typically costs more than nothing to consider.
Reference
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