BARCUS-BERRY

electromechanical, piezoelectric and mechano-electrical transducers, electronic preamplifiers, mixers, volume controls, electrical cables and cable connectors, terminal jacks and adapters, microphone power supplies, magnetic pickups and microphones for musical instruments, active line transformers; and electromechanical, mechano-electrical, electronic and electrical component parts

stringed musical instruments, bridges for stringed musical instruments having a built-in piezoelectric transducer, and component parts for wind instruments having either a built-in microphone or a mechanical interface for receiving a microphone