STEREOPHONES, STEREOPHONE PLUG ADAPTORS, STEREOPHONE MONAURAL ADAPTORS, STEREOPHONE REPLACEMENT CUSHION SETS, COILED STEREOPHONE EXTENSION CORDS, STEREOPHONE SPEAKER SWITCHES, STEREOPHONE EXTENSION CABLES, STEREOPHONE PIN-TYPE ADAPTORS, STEREOPHONE PIN-TYPE EXTENSION CORDS, CHAIR SIDE LISTENING STATIONS, REMOTE CONTROL STATIONS, AND STEREOPHONE CONNECTOR BOXES