This is the FISHMAN PRO-FCL-002 Fishman FULL CIRCLE 002 pickup for contrabass. I purchased it last February and used it live after having it installed at a professional shop, but the sound stopped working when I was adjusting the adjuster, apparently putting stress on the cable. I suspect the cable is broken, but since the cable is directly attached to the adjuster, it cannot be repaired. Please understand that this is for parts or for someone who can fix it themselves.