HORNS FOR LOUDSPEAKERS; LOUDSPEAKERS; MEGAPHONES; MICROPHONES; CASSETTE PLAYERS; ACOUSTIC COUPLERS; ACOUSTIC COUPLING DEVICES; AUDIO SPEAKER ENCLOSURES; AUDIO SPEAKERS; HEADPHONES; PORTABLE VIBRATION SPEAKERS; SPEAKER MICROPHONES; PORTABLE AND HANDHELD DIGITAL ELECTRONIC DEVICES FOR RECORDING, ORGANIZING, TRANSMITTING, MANIPULATING, AND REVIEWING TEXT, DATA, IMAGE AND AUDIO FILES; DIGITAL AUDIO PLAYERS; SOUND MIXERS; ELECTRONIC SOUND MIXING, PROCESSING AND SYNTHESIZING APPARATUS
Electrical and Scientific Apparatus