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Average Price: $100
Standard/Professional
$99
$200+
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Budget
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Price History
Based on price data from 5 merchants for "Seymour Duncan SJBJ-1 JB Jr.". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Behold the Seymour Duncan JB Jr. SJBJ-1, a unique, twin-coil design pickup that packs the power of a full-size humbucker into a single-coil size. This marvel of a musical accessory offers an exceptional balance of great harmonics and a sweet high-end, designed to cater to a range of music styles, from heavy blues to heavy metal.
Unlike most humbuckers, the JB Jr. SJBJ-1 features adjustable pole pieces, giving you the freedom to fine-tune the balance of your strings and effectively emulate the magnetic field of a full-size humbucker - a first for a humbucker this size. With a high output and enhanced high-end response, this pickup not only adds depth and dimension to your music but also provides a tonal character that works well with both maple and rosewood fingerboards.
An added bonus? The Seymour Duncan JB Jr. SJBJ-1 requires no modification to your instrument, allowing Strat players to reap the benefits of a high-output humbucker without any hassle. The pickup comes with a four-conductor hookup cable to facilitate complex switching options, ensuring you get the most out of your music-making experience.
Key Features:
- Twin-coil design, packing the power of a humbucker in a single-coil size
- Adjustable pole pieces to fine-tune string balance
- High output with great harmonics and a sweet high-end
- Requires no modification to the instrument
- Comes with a four-conductor hookup cable for complex switching options
- Works well with both maple and rosewood fingerboards
- Perfect for all well-balanced instruments
- Suitable for a range of music styles, from heavy blues to heavy metal
- Color: White
- Position: Bridge
Product specs
| Type | Humbucker |
| Position | Bridge |
| Active/Passive | Passive |
| Magnet Material | Ceramic |
| Number of Conductors | 4 wire plus shield |
| DC Resistance | 15.2K |
| Connectivity | Soldered |
| Number of Strings | 6 |
| Covering | Covered |
| Format | Strat-sized |
FAQs
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What type of sound can I expect from the Seymour Duncan SJBJ-1 JB Jr. pickup?
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The Seymour Duncan SJBJ-1 JB Jr. delivers a powerful, high-output sound with a rich midrange and tight bass response, making it ideal for rock and blues genres. Its ceramic magnet provides clarity and sustain similar to a full-sized JB humbucker.
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Is the Seymour Duncan SJBJ-1 JB Jr. suitable for a Stratocaster?
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Yes, the Seymour Duncan SJBJ-1 JB Jr. is designed to fit into a Stratocaster's bridge position, offering humbucker tones in a single-coil size without needing major modifications.
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How does the Seymour Duncan SJBJ-1 JB Jr. compare to a full-sized JB humbucker?
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The SJBJ-1 JB Jr. offers similar tonal characteristics to the full-sized JB humbucker, such as high output and a pronounced midrange, but in a compact, Strat-sized format that fits single-coil routes.
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Can the Seymour Duncan SJBJ-1 JB Jr. be used with a 6-string guitar?
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Yes, the Seymour Duncan SJBJ-1 JB Jr. is designed for use with 6-string guitars, specifically in the bridge position.
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What wiring options does the Seymour Duncan SJBJ-1 JB Jr. support?
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The Seymour Duncan SJBJ-1 JB Jr. features a 4-conductor wiring setup, allowing for versatile wiring options including coil splitting for additional tonal possibilities.
Videos
ACMusic
Seymour Duncan JB Jr vs Hot Rails Demo
Reviews
PROS
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Extremely quiet with excellent noise cancellation
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Offers a versatile range of tones from clean to high-gain
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Articulate sound, even at high gain, revealing precise playing technique
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Provides a full, humbucker-like sound while retaining Strat characteristics
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Installation instructions ensure proper wiring for optimal performance
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Enhances older or underperforming guitars with renewed vigor
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High output suitable for heavy genres
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Works seamlessly in the bridge position for Strats
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Maintains clarity without mushing up in dropped tuning
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Excellent for harmonics and dynamic playing
CONS
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May require additional equipment to drive high-output amps effectively
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Can sound thin and piercing in certain positions
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Installation can be tight due to wire gauge and proximity issues
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Not ideal for clean tones, better suited for overdriven sound
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Seymour Duncan SJBJ-1 JB Jr..
Use cases and applications
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The JB Jr. excels in both bridge and neck positions for genres like hair metal, fitting well into a mix with its mid-focused tone.
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The JB Jr. has a pronounced midrange that enhances clarity in black metal, particularly for fast strumming and dissonant chords.
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The pickup is versatile enough for metal genres like black and thrash, despite being a single-coil sized humbucker.
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Some players feel the JB Jr. can be overpowering in the neck position and suggest using the Little 59 there instead for better balance.
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Features and functionality
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The JB Jr. offers a focused sound with strong mids, providing high output and sustain without excessive low-end boom, retaining Strat's character.
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The JB Jr. is recognized for its pronounced midrange, which can be beneficial in specific metal styles, despite its single-coil size limits.
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For Strat-style guitars, 250k pots are often preferred with the JB Jr. to avoid overly dark tones.
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Comparisons
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Compared to Hot Rails, the JB Jr. delivers a more delicate sound with less output but still enhances warmth and output significantly.
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While the JB Jr. has a DCR of over 15k, it's noted to have a different tonal characteristic than the full-sized JB.
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Users find the Little 59 to be more single coil-like when coil split, compared to the JB Jr., which sounds like a lower output humbucker.
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Mods and upgrades
Setup and maintenance
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Seymour Duncan single coil-sized humbuckers, including the JB Jr., are generally designed for 250k pots, aligning with their single-coil replacement purpose.
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Critic Reviews
5.0 out of 5
Based on 2 Reviews and 20 Ratings
127
Nice
I use mine in the bridge position of my Strat. It's not good for clean sounds. For overdriven tones it's amazing!
Artist usage
Add artist
Kurt Cobain briefly used a Seymour Duncan SJBJ-1 JB Jr. in the bridge position of his Fiesta Red Fender Mustang, as seen during the Roseland Ballroom performance on July 23, 1993, in New York City. This is evidenced by the video "Nirvana - 7/23/93 - [3-Songs] - Roseland Ballroom - (New Music Seminar) - New York, NY" by Alt Copperpot5 on YouTube. He later switched to the full-size JB humbucker.
Billie Joe Armstrong uses the Seymour Duncan SJBJ-1 JB Jr. pickup specifically in his Fender Bullet Deluxe guitar, as shown in the provided photo from Cdninstagram.
A black version of this pickup can be seen in the middle position of Toms sticker strat at 25:40 to 25:45
Ed O'Brien uses a Seymour Duncan JB Jr. pickup in the bridge position of his signature model:
The single-coil-sized Seymour Duncan® JB Jr. humbucking bridge pickup offers giant tone...
According to Seymour Duncan's official Website, Joe Perry uses the Seymour Duncan JB Jr. SJBJ-1 pickup.
"Janick Gers, whose ideal guitar is a stock Strat, plays the JB Jr pickup in the neck and bridge positions to counteract the hum that results from playing huge stages, and for the punched-up tone that it gives. He has a Hot Rails pickup in the middle position."
His signature Sterling model has Seymour Duncan JB Trembucker in the bridge position and JB Jr in the neck position .
In this video, Takayoshi Ohmura's ESP Snapper is shown to be equipped with JB Jr mini-humbuckers.
Kennedy Brock uses the Seymour Duncan SJBJ-1 JB Jr. pickup in his Fender Offset Series Duo-Sonic, as shown in an Instagram post promoting the U.S. Lovely Little Lonely tour.
Ryan Primack's main guitar features a Seymour Duncan JB Jr. (mistakenly referred to as a Mini JB in the article) as its bridge pickup.
Album Usage
The Seymour Duncan SJBJ-1 JB Jr. has been featured on the following albums:
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Seymour Duncan SJBJ-1 JB Jr., it is most commonly used with the following gear.
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