EMG JX System Pre-Wired Bass Pickup Set JX System Pre-Wired Bass Pickup Set "EMGaTMs classic J pickups are now available in a completely solderless system that includes everything youaTMll need to swap your Jazz Bass pickups with no hassle EMG have mounted and wired everything to your new control plate a" volume, volume and tone pot Drop in the pickups, plug in the solderless connectors, and play The EMG JX Set is based off the original J with the added headroom and dynamic response of the X Series preamp