Electrical, electronic, electroacoustic instruments and parts thereof for receiving, transmitting and reproducing audio signals, namely, microphones, filters for noise reduction, mains receivers, electroacoustic transducers, headphones, loudspeakers, stereo amplifiers, batteries, battery chargers, and parts thereof; equipment for broadcasting, transmitting and receiving sound or video signals, namely, stereo receivers, audio receivers, stereo amplifiers, stereo tuners; high-frequency sound tr...