Jazz-GAS "John Greg" Signature set

The low end roar

Trademarks: Full tone. Low midrange boost.

Styles: Rock'n'roll, blues, rock, funk, fusion, pop

Output: High

Retail price: 220 Euros per set

Contact us for more info

  • Greek Top Bass player John Grigoriou asked for a signature GAS-Bass pickup set based on the JG 60 set, but with a deeper voicing. We designed and delivered...

    Available as a set only.

    The neck pickup is RW/RP for hum cancellation when both pickups are in operation.

  • Neck Rdc range9,4 kOhms
    Neck Resonance frequency5,3 kHz
    Bridge Rdc range10,5 kOhms
    Bridge Resonance frequency 4,9 kHz
    Rod magnet alloyA5
    Rod diameter0,187"
    Rod topBevel
    Winding wire (AWG, Coating)42 polysol
    Hookup wireAWG 22 Cloth braided

  • Coming Soon

  • Introduction

    For the proper installation and wiring of your GAS Pickups, we strongly recommend letting a professional luthier or electrician perform this job in order for the pickups to be installed correctly and with no damage, which would harm the pickup’s functionality and warranty.


    All GAS Bass Singles are delivered with plastic covers (you may choose between white, cream, and black, or a combination of them, in case that you order more than one pickup), proper height adjustment screws, and springs (or rubber tubes).


    GAS Bass Singles come with two cloth hookup wires, a black and a white one. In the case of a set, if the neck pickup is RW/RP there will be a yellow wire instead of the white one. Usually the black wires will be grounded, while the white and yellow ones will go hot. However, if you install a GAS Bass Single along with pickups of other brands on the same guitar and face out-of-phase problems when operating with them, just swap the black with the white (or yellow) wires. For the desired wiring diagram of your bass guitar, please refer to the dozens of specialized websites with such diagrams, depending on the desired configuration.

    Pickup height or string distance

    There is a lot of conversation on this item. The fact is, there is no absolute guidance for a generic pickup height adjustment! The distance of a pickup to the strings is dependent on countless factors, such as pickup output, pickup position, string gauge, the guitar itself, the guitarist’s overall playing technique (string hitting, etc.), and the musical styles that are about to be covered. In the case of a pickup set, usually the pickup height is adjusted so all pickups show a similar output level, but this is not a rule. Our recommendation: The desired pickup height adjustment is a procedure that may last longer than you think; just start with a generic distance of 3mm on the E and g strings and repeat the procedure (adjust, play, listen, re-adjust) until you are satisfied. Don’t forget to adjust in small steps (e.g., one full turn of the height adjustment screw each time) in order to easily come back one step if you are not happy with the new situation. And, trust us, if you just repeat the whole thing a couple of weeks later, you will probably find yourself re-adjusting the height again. It is something that each musician should go through by himself.


    GAS Bass Singles are direct replacements for Fender® Precision®, Jazz Bass, and PJ bass guitars and similar models. The pickups dimensions (including pickup covers) are as follows (sizes in mm):