Detail 01
7-string bridge model
This pickup is identified for the bridge position of a seven-string guitar.
Product detailSKU #1500000440033
Seymour DuncanSH-4 JB Rails 7-String Humbucker Pickup Black Bridge
Independent shopping perspective
The Korena take
SH-4 JB Rails is a black bridge humbucker identified for seven-string guitar. Its rail design spreads the magnetic field across all seven strings, supporting even balance for the low B along with clarity and sustain. The voicing combines powerful low end, strong highs, and an upper-midrange boost intended to cut through a mix. An Alnico 8 bar magnet and 4-conductor lead wire support the design, while vacuum wax potting addresses squeal at high volumes.
Strong match
Who this is for
- Seven-string bridge setups where even response across the low B is a priority.
- High-volume hard rock, metal, or fusion playing requiring strong highs and defined upper mids.
What matters in use
The specifications, translated
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 02
Rail design
The magnetic field is distributed across all strings for balance, clarity, and sustain.
Detail 03
4-conductor lead wire
It provides multiple wiring options.
Detail 04
Vacuum wax potted
It is specified for squeal-free performance at high volumes.
Final check
Know before you order
- 01This model is identified as a seven-string bridge pickup.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What magnet does the SH-4 JB Rails use?
It uses an Alnico 8 bar magnet.
02How is it designed to handle high volume?
It is vacuum wax potted for squeal-free performance at high volumes.
03What tonal emphasis is described?
It has powerful low end, strong highs, and an upper-midrange boost that cuts through the mix.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Black
