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A - COMPANIES: AB International, Accuphase, ACE R/C Inc, Acoustat, Acoustech, Acoustic Dynamics, Acoustic Research, ADC, Adcom, Admiral, ADS, Advent, Afco Electronics, AGS, AIMS, Aircastle, Airchief, Airline, Airtronics, Aiwa, Akai, Alaron, Allied Radio, Allison Acoustics, Alpine, Altec, Ambassador, AMC, Amelux, American Motors, Ampeg, Ampex, Ampro, Apt Holman, ARA, Archer, Argos, Arkay, Arrakis Systems Inc, Arthur Fulmer, Arvin, Astra, Astrocom Marlux, Audi, Audimation, Audio Control, Audio Design, Audio Reflex, Audio Research, Audiometric, Audio-Technica, Audiotronics, Audiovox, Automatic Radio, Auto-sonic, Autostereo, Autotek, Avanti, Aventura, Avid

B - COMPANIES: Bang & Olufsen, Becker, Belar, Bell & Howell, Bell Sound, Bell, Belsona, Bendix, Benjamin, BES, BGW, Biamp, BIC, Bigston, Black & Decker, Blaupunkt, Bogen, Bohsei, Boman, Bose, Bozak, Bradford, Brandt, Braun, British Leyland, Broadcast Electronics Inc, Broksonic, Browning Lab, BSR, Burhoe Acoustics

C - COMPANIES: C/M Labs, Califone, Calix, Canon, Capehart Dumont, Capitol, Carrera, Cartape, Carver, Casio, Catalina, Celestion, Cerwin Vega, Channel Master, Chevrolet, Chrysler, Cipher, Citizen, Claricon, Clarion, Cobra, Colortyme, Concertone, Concord, Consumer Reports, Continental Edison, Continental, Coral, Cordovox, Coronado, Courier, Coustic, Craftsmen, Craig, Cranwood, Crate, Crescent, Criterion, Crown Japan, Crown, Curtis Mathes

D - COMPANIES: Dahlquist, David Hafler, Daytron, db Audio, dbx, DCM, Delco, Delmonico, Denon, Direct TV, Discwasher, Ditton, Dokorder, Don McGohan Inc, Dorchester, Dual, Dumont, Dynaco, Dynatech

E - COMPANIES: Earth, Eico, Ekotape , ELAC, Electrobrand, Electro-Voice, Emerson, Empire , Encore, Epicure, Epiphone, Epson, Eric Electronic Corp, Esoteric, ESS

F - COMPANIES: Fannon, Fender, Ferrograph, Firestone, Fisher, FONS, Ford, Fostex, Frazier, Fujitsu Ten, Fultone, Funai, Furman Sound, Futaba

G - COMPANIES: Galaxy, Garrard, GAS, Gately Electronics, GE, Gemini, General Industries, General Motors, Genesis, Gibbs, Gibson, Glenburn, GLI, Go Video, Goldstar, Grado, Gran Prix, Granada, Granco, Grommes, Grundig

H - COMPANIES: Hafler, Hammond, Handic, Harmon Kardon, Harris, Heath, Hewlett Packard, HH Scott, Hi-Comp, HiFi Tape Recording, Hitachi, Holmes, Honda

I - COMPANIES: ICP, IMF Fried, Imperial, Infinity, Inland-Dynatronics, Integral Systems, Interaudio, Inter-Ego Systems, Irish, Isuzu

J - COMPANIES Jamo, JBL, JC Penney, Jeep, Jennings Research, Jensen, Jet Sounds, JIL, John Deere, Johnson, Julliette, JVC

K - COMPANIES: Kelsey, Kent, Kenwood, KID Designs, Kingspoint, KLH, Klipsch, K-Mart, Knight, Korg, Korting, Koss, Kraco, Kurzweil, Kustom

L - COMPANIES: Lafayette, Lanier, Lasonic, Leak, Lear Jet, Lenco, Lenoxx, Lesa, Leslie, Lexington, Lincoln, Linear Power, Linn Sondek, Lloyds, Lo-D, Lucor, Luxman

M - COMPANIES: Macom, Madison Fielding, Maestro, Maestro, Magnavox, Magnecord, Magneplanar, Magnin, Magnum Opus, Majestic, Marantz, Marshall Wells, Marshall, Martel, Masco, Massey Ferguson, Masterwork, Maxell, Mayfair, Mazda, McGohan, McIntosh, MCM Electronics, McMartin, Mecca, Medallion, Megastar, MEI, Melco, Mercury, Meriton, Metz, Midland, Miida, Mikado, Miller & Kreisel, Milwaukee-Erwood, Mitsubishi, Monacor, Monarch, Monteverdi, Moog, Mopar, Morse, Mortel Electronics, Motorola, Multisonic, Multitech, Muntz, MX

N - COMPANIES: NAD, Nady, Nakamichi, NEC, NEI, Neptune, Nikko, Nissan, Nordmende, Norelco, Nova-Tech, Numark, Nutone

O - COMPANIES: Ohm, Oki, Olson, Olympic, Onkyo, Optonica, Orrtronics, Ortofon, Otari

P - COMPANIES: Pace, Packard Bell, Paco, Panasonic, Parasound, Park, PE, Pearlcorder, Peavey, Pentagon, Pentax, Pentron, Phase Linear, Philco, Philips, Phone-mate, Phonola, Pianola, Pickering, Pilot, Pioneer, Plymouth, Polk Audio, Pontiac, Porsche, Power Acoustik, Pro Line Electronics, Protech, Proton, PS Audio

Q COMPANIES: QSC Audio, Quasar

R - COMPANIES: Rabco, Radian Research, Radion, Radio-Shack, Ramsa, Randall, Rane, Ranger, RCA, RCA Victor, Readers Digest, Realistic, Realtone, Rek-O-Kut, Revere, Revox, RG Dynamics, Rheem Califone, Riverside, Roadstar, Roberts, Rockola, Roland, Rolecor, Ross, Rotel, Royce

S - COMPANIES: Saab, Saba, SAE, Sams Photofact, Sampo, Samsung, Sankyo, Sansui, Sanyo, Schober, Sears, Seiko, Sennheiser, Sentrek, Servolinear, Setton, Sharp, Sheffield Labs, Sherwood, Shure, Signet, Silvertone, Singer (Graflex), Sonus, Sony, Souncraftsman, Sound Technology, Soundesign, Soundstream, Sparkomatic, Spectro Acoustics, Spendor, SR, Standel, Stanton Vestax, Stenotape, Steremote, Stereosonic, Studer, Subaru, Sumo, Superscope, SWTP, Sylvania, Symphonic, Synergistics

T - COMPANIES: Talk-a-Phone, Tandberg, Tangent, Tapco, Targa, Tascam, TDK, Teac, Tec Trak, Technics, Techwood, Teknika, Telarc, Telectro, Telefunken, Teletalk, Telex Phonola, Telex, Telmar, Ten, Tenna, The Audible Difference, Thomas, Thorens, TMK, TOA Electronics, Toshiba, Totevision, Toyo, Toyomenka, Toyota, Tracker Premier, Transcriptors, Triumph, Truetone

U - COMPANIES: Uher, Ultrx, Unicord, Unisonic, United Audio, United Stereo Tape, Universal Tapedex, University Sound

V - COMPANIES: Vector Research, Velodyne, Video Concepts, Videotek, Viewlex, Viking, Vista, Vivitar, VM, VMPS, Volkswagen, Vox

W - COMPANIES: Waltham, Wayfarer, Webcor, Webster Chicago, Webster Chicago, Webster Electric, Welbilt, Welton, Westinghouse, Westport, White Electronics, White Motor Co, Wintec, Winthrop, Wollensak

X - COMPANIES: Xtal, Xylophile

Y - COMPANIES: Yamaha, York, Yorx

Z - COMPANIES: Zenith

EXAMPLES OF EQUIPMENT TYPES: Consumer Electronics, Audio Equipment, Home Audio, Car Audio, Analog Sound, Digital Sound, Vintage Tube Audio, Old Time Radio, Golden Age, Mono Stereo Audiophile, Solid State, Transistor, 60's 70's 80's 90's Audio, Discrete, Quad, 4CH, Matrix SQ, 4 CH Decoder, 2 Channel, 4 Channel, Quarter Track, 2 Track, 4 Track, 8 Track, 16 Track, 24 Track, Tape Recorder, Tape Recording, Magnetic Tape Recorder, Tapecorder, Open Reel Deck, Reel to Reel Deck, 8-Track Player, 8-Track Recorder, Multi Track, Mixer, Mixing Console, Microphone, Cassette Deck, Cassette Player Cassette Recorder Cassettecorder Walkman Minidisc Casseiver Component System Stereo System Compact System Shelf System Mini System Micro System Modular System Portable Rack System, AM ,FM, SW, Tuner, Stereo Tuner, Tuner Amp, Preamp, Preamplifier, Control Amp, AV Preamp, Amps, Integrated Amplifier, Power Amplifier, Dual Mono Amp, Monoblock, AV Receiver, Receiver, 5.1 7.1 Receiver, Home Theatre, Karaoke, Turntable, Record Player, Record Changer, 33 45 78, LP, Vinyl, Video Tape Recorder, VTR, VCR, Beta, Video Camera, Vidcam, Camcorder, Laserdisc, Laser Vision, LaserVision, CD Player, Compact Disc, Single Disc CD, Multi Disc CD, CD Recorder, CD Library, CD Controller, Car CD, Car Navigation, Switching Unit, Remote Control, Wired Remote, Speaker Selector, DVD Player, DVD Recorder, TV, Television, B/W, Color TV, Rear Projection TV, LCD TV, Flat Panel Display, Plasma TV, Reverb Amp, Reverberation, Sound Processors, DSP, Processor, Noise Reduction, Dolby A B C, Dolby Decoder, Dynamic Expansion, Compressor Expander, Dynamic Expander, Compander, AV Receivers, Audio Visual, Surround Sound, Headphones, Speakers, Speaker System, Subwoofer, Crossover, Electronic Crossover, Biamping, Equalizers, Graphic Equalizer, Parametric Equalizer, Audio Timers, Digital Timer.