Boss GK-5B K Bass Pickup
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Manufacturer Information
Boss
https://www.roland.com
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Serial GK: A Modern Evolution of the GK Interface
The GK-5B is a user-installable bass pickup designed for the digital Serial GK interface of the latest BOSS guitar synthesizers. Compared to the older 13-pin analog interface, this new connection offers improved performance and opens up a world of new sonic possibilities for guitar and bass synthesis.
Who Is the GK-5B For?
This pickup is ideal if you want to control synth sounds with your electric bass while maintaining a clean and instrument-appropriate installation. Its flat and thin pickup is designed to fit most 4, 5, or 6-string basses, and the adjustable pickup spacing allows you to tailor the setup to many bridges for precise string-by-string tracking.
Designed for Stable Installation and Reliable Use
The GK-5B focuses on stable digital transmission and features a lightweight, streamlined connection box that sits lower than previous generations. To secure the setup on stage or during rehearsals, the connector box attaches firmly to the instrument's strap button using the supplied bracket. For consistent performance with your Serial GK product, specially designed BOSS Serial GK cables (BGK series) are available.
Technical specifications
| Electronics | Active | Winding | simple |
| Category | bass microphone | Position | bridge |
| Instrument | 5-string bass, 4-string bass, 6-string bass | Color | Black |
| Magnet | Ceramic | ||
| Type | next-generation divided pickup for electric bass | Adjustment | adjustable pickup spacing to fit most bass bridges |
| Compatibility | Serial GK interface used in the latest BOSS guitar synthesizers | Mounting | connector box fixed to the strap button via the supplied bracket |
| Transmission | digital, stable | Compatible cables | dedicated BOSS Serial GK cables (BGK series) for stable and precise operation |
| Connection box | lightweight and streamlined, lower profile than previous GK pickups | Included in the box | mounting hardware set |
| Pickup | flat and thin, compatible with most 4, 5, or 6-string electric basses | Recommended accessories | BGK-15 Serial GK cable (4.5 m) |
Questions frequently asked
Is the Boss GK-5B compatible with a 5-string bass?
This model is suitable for electric basses with 4, 5, or 6 strings thanks to its flat and thin pickup. The pickup spacing is adjustable to fit many bridges.
What type of connection should be used with this GK pickup?
The connection is based on the Serial GK digital interface found on the latest BOSS guitar synthesizers. BOSS Serial GK cables from the BGK series are designed for this transmission, with the 4.5 m BGK-15 recommended.
Does the GK-5B pickup work with the old 13-pin GK connections?
No, this pickup is designed for the Serial GK digital interface, which is different from the older 13-pin analog interface.
How is the connection box mounted on the bass?
The lightweight, streamlined box attaches to the instrument’s strap button using the supplied bracket. A set of mounting pieces is included. Its size is lower-profile than previous GK pickups.
What type of pickup is the GK-5B?
The active electronics use a new generation divided pickup, with individual string tracking. The specifications indicate a ceramic magnet, single coil winding, and a bridge position.



