803	SOUND SYSTEMS, COMPONENTS, AND ACCESSORIES: GROUP INTERCOM, MUSIC, PUBLIC ADDRESS, ETC.
80310  *	Cartridges (Microphone, Phonograph, etc.), Needles, Pickup Arms, Styli, etc.
80316  *	Disc Players, Compact
80320  *	Group Auditory Systems, Language Laboratories, and Speech Training Equipment
80330  *	Intercom Systems, Group (For Panel Discussions, Schoolrooms, etc.)
80340  *	Microphones and Related Equipment: Chestsets, Earphones, Handsets, Headphones, etc.
80345  *	Music Systems and Components: Amplifiers, Mixers, Preamplifiers, Tuners, Turntables, etc.
80350  *	Music Systems and Components (Stereo Only)
80355  *	Paging Systems, Loud Speaker Type
80356  *	Paging Terminal, Solid State (Computerized)
80360  *	Public Address Systems, Portable
80361  *	Public Address Systems, Stationary
80365  *	Record Players (Phonographs, Record Changers, Transcription Players) and Accessories
80370  *	Recording Disks and Sound Sheets (Including Compact and Laser Disks)
80375  *	Recording Tape, Sound: Audio Cassettes, Cartridges, Reels, etc.
80380  *	Speakers and Accessories: Drivers, Enclosures, Grilles, Grille Cloth, etc.
80382  *	Studio Monitors, Broadcasting and Recording
80385  *	Tape Recorders, Decks, Players, etc., Sound (Not for Office Dictation)
80390  *	Tape Duplicating and Erasing Equipment