Description
The SH-4 JB Rails takes Seymour Duncan’s most iconic humbucker and reworks it with a rail design tailored for 7-string guitars. It keeps the JB’s signature character—strong top and bottom end paired with a pushed-forward upper midrange—but reshapes how that tone gets delivered across the wider string spacing.
Instead of traditional pole pieces, each string passes over an Alnico VIII bar magnet, giving you even coverage and consistent output no matter where you’re picking. The result is a clearer, more articulate voice with solid sustain, since no string gets shortchanged in the frequency response. For players chasing a matched set, this pickup pairs naturally with Seymour Duncan’s Jazz Rails neck pickup.
Your choice of volume pot shapes the final tone: a 500k pot brings out more top-end sparkle, while a 250k pot smooths things into a slightly warmer, mellower response.
Every SH-4 JB Rails is handbuilt at Seymour Duncan’s Santa Barbara, California facility. Inside, you’ll find:
- Vacuum wax-potted construction to fight microphonic squeal
- 4-conductor lead wire for flexible wiring setups
- Support for series, parallel, and split-coil configurations
Built specifically for 7-string setups, this version delivers the JB’s core attitude to extended-range players without sacrificing clarity or balance.
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