Portable digital audio players; audio speakers; amplifiers; home theater systems comprised of optical disc players and recorders, audio amplifiers, audio speakers, dock audio speakers and subwoofers; DVD players and recorders; optical disc players and recorders; digital audio players and digital audio recorders; digital video players and digital video recorders; headphones; in-car digital audio players and audio speakers

'amplifi':7,19 'audio':3,5,18,20,23,37,41,55,58 'car':53 'compris':11 'digit':2,36,40,43,47,54 'disc':14,32 'dock':22 'dvd':27 'headphon':50 'home':8 'in-car':51 'optic':13,31 'player':4,15,28,33,38,45,56 'portabl':1 'record':17,30,35,42,49 'speaker':6,21,24,59 'subwoof':26 'system':10 'theater':9 'video':44,48

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