Boss GKC-ad 13pin To Serial Converter
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What you need to know
What you need to know
- Immediate Compatibility : Use a Roland GK-3 or GK-3B divided pickup (and more broadly any instrument with a GK 13-pin output ) with the Serial GK input of the new generations.
- Analog to Digital Gateway : Converts the analog GK 13-pin interface to the digital Serial GK interface to take advantage of the performance of the latest BOSS systems.
- Dedicated Instrument Output : Retrieves the "normal" sound from the guitar/bass pickups present in the 13-pin connection, useful for maintaining a classic signal in parallel.
- Compact and Robust Format : Metal housing designed for both studio use and pedalboard integration.
Manufacturer Information
Boss
https://www.roland.com
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A Gateway Designed for the New Serial GK Generation
With the arrival of the Serial GK interface on recent guitar synthesizers, BOSS introduces a modernized connection method compared to the historically used analog GK 13-pin format found on many BOSS and Roland products. The GKC-AD fits precisely into this transition: it allows you to keep your GK 13-pin equipment while accessing the Serial GK ecosystem.
Specifically, this converter serves as a bridge between your existing setups (GK divided pickup, instrument wired with GK 13-pin) and BOSS devices equipped with the Serial GK input, notably the GM-800.
Who Benefits from the BOSS GKC-AD and in What Use Cases?
The BOSS GKC-AD is intended for guitarists and bassists who want to upgrade their setup without replacing their divided pickup GK-3 or GK-3B. It is particularly relevant if you play with synthesis sounds, modeling, ambient textures, or parts requiring precise note tracking.
In concert, it simplifies integrating an instrument equipped with GK 13-pin with a Serial GK system. In the studio, it allows maintaining a stable configuration (instrument, existing GK wiring) while benefiting from newer connectivity on the synthesizer side.
GK to Serial GK Conversion: Connectivity and Design
Conversion from GK 13-pin Interface to Serial GK Interface
The main role of the GKC-AD is to convert an analog GK divided pickup system with 13 pins to the newly developed Serial GK interface. It thus becomes the central element in the chain when you want to control the Serial GK input of a compatible synthesizer from an instrument already equipped with GK 13-pin.
GK 13-pin Input, Serial GK Output, and Instrument Output
The connectivity is designed for simple and efficient use: a GK 13-pin input for the instrument, a Serial GK output for the compatible device, and an instrument output intended to transmit the "normal" sounds from the guitar/bass pickups integrated into the 13-pin connection. Ideal for maintaining a traditional signal path in parallel (amplifier, pedals, DI), while exploiting the synthesizer's possibilities.
Compact Metal Housing
Designed to last, the GKC-AD features a compact and robust metal design, suited to the demands of transport, rehearsals, and live stages. Its format facilitates integration on a pedalboard or near the synthesizer, with a "plug and play" approach focused on reliability.
Technical specifications
| Technology | Analog & Digital | Use | electric guitar |
| Type | sector | Color | Grey |
| Conversion | 13-pin analog GK pickup systems to the Serial GK digital interface | Design | metal, compact |
| GK input | 13-pin | In the box | owner's manual, leaflet " USING THE DEVICE SAFELY " |
| GK output | Serial GK | GK serial cable | BGK-15 (4.5 m), BGK-30 (9 m) |
| Instrument output | normal sounds from the built-in guitar/bass pickups carried through the 13-pin connection | ||
Questions frequently asked
Is the Boss GKC-AD compatible with a GK-3 or GK-3B pickup?
The 13-pin analog GK input allows connection of an instrument equipped with a divided GK-3 or GK-3B pickup. The conversion then makes this signal usable by a Serial GK input.
How to connect a 13-pin GK guitar to a GM-800?
The converter is placed between the instrument with a 13-pin GK output and the synthesizer's Serial GK input. The Serial GK link can be made with a BGK-15 cable of 4.5 m or a BGK-30 cable of 9 m.
Does the instrument output of the converter transmit the sound from the guitar pickups?
An instrument output is provided to transmit the normal sounds from the guitar or bass pickups present in the 13-pin connection. A separate path can thus be sent to an amp, pedals, or a DI box.
Can this converter be used with a GK-equipped bass?
The use concerns instruments equipped with a 13-pin GK connection, including basses using a GK-3B pickup. The signal is converted to the Serial GK interface.
Can the GKC-AD be installed on a pedalboard?
Its compact metal housing facilitates installation on a pedalboard or near a synthesizer. This design is suitable for transport, rehearsals, and stage use.



