The elegant and small K1 Wilson Pickup consists of one single piezo element connected to a Switchcraft 121 extension jack is providing you almost the same assets as the original and wellknown K4. The sound is focused and gives the punch that the bass has as well as the body and warmth. Individual volume control of each string is not possible with the K1. The K1 Wilson Pickup is easily mounted directly into the bridge and the optional hole position provides the natural acoustic bass sound from a Wilson Pickup without feeding back. Special mounting tools and mounting bracket are included with each set of K1 pickups.