Abstract: A plurality of sound pick-up devices are mounted between the legs and wings of a bridge for a bass viol. Each sound pick-up device comprises a brass housing in which is disposed a transducer disc. Contiguous with one side of the transducer disc is a brass shim contact. A foam damper pad is disposed between the shim contact and the housing. The housing is in the form of spaced members joined at one side and a silicon latex potting material fills the spaces remaining between the spaced members. A coaxial cable interconnects the pick-up devices and is of sufficient length to permit the mounting of the pick-up devices in the side cut-out slots between the crown wings and the legs on each side of the bridge. The coaxial cable terminates on a cable connector for connection to an amplifier through a suitable output cable.